SPAIN

 

Country: Spain

Year: 2018

Title: Survey on Equipment and Use of Information and Communication Technologies in Households

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 5 February – 18 May 2018

Sampling and statistical methodology:

 

The sampling frame for primary sampling units is a census sections' list continuously updated in order to incorporate any possible variations.

For secondary sampling units the sampling frame is obtained through exploitation of the Population Register managed by INE, which gives the list of households.

 

A probability sampling design is used, with 3 sampling stages (geographical areas, households and individuals) and an explicit stratification at first stage.

The sampling method at first stage is the systematic sampling with probabilities proportional-to-size with stratification effect. The related auxiliary variables for stratification are municipalities.

The sampling unit at the ultimate stage is the individual. Within each household a person aged 16 or over was chosen with equal probability using the Kish random method. In addition, information is collected for all children aged 10 to 15 years.

Reference period:

Access to selected ICT technologies (equipment ): survey period

Use of Internet : last three months before the interview (mainly)

Use of e-government, e-skills: last year before the interview

Use of e-commerce: last year before the interview (mainly)

Trust, security and privacy: last year before the interview

ICT usage at work: last year before the interview (mainly)

Digital Skills: last year before the interview

Background variables : the week before the interview 

Collection method:

The data collection is based on a mix mode consisting of a self-administered WEB interview for the whole sample as a first attempt.

For non-respondents on this mode, a CATI-CAPI model is conducted. CAPI for first interviews and CATI for subsequent waves are used in households with telephone. A quarter of sample is renewed each year.

44,6% of the sample used CAWI to answer the questionnaire, 20,8% CAPI and 34,4% CATI.

Stand-alone survey, voluntary according to Spanish law.

Population covered: age 16-74. A specific module for children aged 10-15 years is included, as well as for individuals aged 75 or older.

Population size:

Households: 16 351 015

Individuals: 34 639 211

Net Sample size:

Households: 15 702

Individuals:  14 980

Overall response rate:

Households: 78,1%       Individuals: 77.3%

Main methodological differences compared to previous survey(s):

In 2018, no changes.
In 2017, CAWI has been established as the first data collection method, which represents an extremely important change for the survey, because this method was not allowed in previous surveys.

The launching of the CAWI data collection would not have to cause important effects on the survey.

 

 

Country: Spain

Year: 2017

Title: Survey on Equipment and Use of Information and Communication Technologies in Households

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 2 January – 26 May 2017

Sampling and statistical methodology:

 

The sampling frame for primary sampling units is a census sections' list continuously updated in order to incorporate any possible variations.

For secondary sampling units the sampling frame is obtained through exploitation of the Population Register managed by INE, which gives the list of households.

 

A probability sampling design is used, with 3 sampling stages (geographical areas, households and individuals) and an explicit stratification at first stage.

The sampling method at first stage is the systematic sampling with probabilities proportional-to-size with stratification effect. The related auxiliary variables for stratification are municipalities.

The sampling unit at the ultimate stage is the individual. Within each household a person aged 16 or over was chosen with equal probability using the Kish random method. In addition, information is collected for all children aged 10 to 15 years.

Reference period:

Access to selected ICT technologies (equipment ): survey period

Use of computers: last three months before the interview

Use of Internet : last three months before the interview (mainly)

Use of e-government, e-skills: last year before the interview

Use of e-commerce: last year before the interview (mainly)

Background variables : the week before the interview 

Collection method:

The data collection is based on a mix mode consisting of a self-administered WEB interview for the whole sample as a first attempt.

For non-respondents on this mode, a CATI-CAPI model is conducted. CAPI for first interviews and CATI for subsequent waves are used in households with telephone. A quarter of sample is renewed each year.

34% of the sample used CAWI to answer the questionnaire, 25% CAPI and 41% CATI.

Stand-alone survey, voluntary according to Spanish law.

Population covered: age 16-74. A specific module for children aged 10-15 years is included, as well as for individuals aged 75 or older.

Population size:

Households: 16 340 564

Individuals: 34 449 634

Net Sample size:

Households: 15 345

Individuals:  14 609

Overall response rate:

Households: 80.6%       Individuals: 77.8%

Main methodological differences compared to previous survey(s):

In 2017, CAWI has been established as the first data collection method, which represents an extremely important change for the survey, because this method was not allowed in previous surveys.

The launching of the CAWI data collection would not have to cause important effects on the survey.

 

 

Country: Spain

Year: 2016

Title: Survey on Information and Communication Technologies Equipment and Use in Households

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 18 January – 13 May 2016

Sampling and statistical methodology:

 

The sampling frame for primary sampling units is a census sections' list continuously updated in order to incorporate any possible variations.

For secondary sampling units the sampling frame is obtained through exploitation of the Population Register managed by INE, which gives the list of households.

 

A probability sampling design is used, with 3 sampling stages (geographical areas, households and individuals) and an explicit stratification at first stage.

The sampling method at first stage is the systematic sampling with probabilities proportional-to-size with stratification effect. The related auxiliary variables for stratification are municipalities.

The sampling unit at the ultimate stage is the individual. Within each household a person aged 16 or over was chosen with equal probability using the Kish random method. In addition, information is collected for all children aged 10 to 15 years.

Reference period:

Access to selected ICT technologies (equipment ): survey period

Use of Internet : last three months before the interview

Use of e-government, use of e-commerce, e-skills, privacy and protection of personal identity : last year before the interview

Background variables : the week before the interview 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI in households with telephone. The proportion of CAPI collection is 37.5% of final sample.

Stand-alone survey, voluntary according to Spanish law.

Population covered: age 16-74. A specific module for children aged 10-15 years is included, as well as for individuals aged 75 or older.

Population size:

Households: 16 029 823

Individuals: 34 389 822

Net Sample size:

Households: 14 251

Individuals:  13 558

Overall response rate:

Households: 75.2%       Individuals: 74.3%

Main methodological differences compared to previous survey(s):

Until 2015, random substitutions for non-respondent households were used in the first interview.

Following the Eurostat suggestions, it was decided to remove the substitution method, and to increase the sample size up to 13 units in each PSU (census section), just in order to assure the effective sample size.

On the other hand, there are two differences more in the sampling design compared to the previous survey.

• Redefinition of the strata, using available information from the 2015 Population Register

• New sample allocation of PSU’s across the strata, in each autonomous community (NUTS2).

 

 

Country: Spain

Year: 2015

Title: Survey on Information and Communication Technologies Equipment and Use in Households  (ICT-H 2015)

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 19 January – 15 May 2015

Sampling and statistical methodology:

 

The sampling frame for primary sampling units is a census sections' list continuously updated in order to incorporate any possible variations.

For secondary sampling units the sampling frame is obtained through exploitation of the Population Register managed by INE, which gives the list of households.

 

A probability sampling design is used, with 3 sampling stages (geographical areas, households and individuals) and an explicit stratification at first stage.

The sampling method at first stage is the systematic sampling with probabilities proportional-to-size with stratification effect. The related auxiliary variables for stratification are municipalities.

The sampling unit at the ultimate stage is the individual. Within each household a person aged 16 or over was chosen with equal probability using the Kish random method. In addition, information is collected for all children aged 10 to 15 years.

Reference period:

Access to selected ICT technologies ( equipment ): survey period

Use of computer : last three months before the interview

Use of Internet : last three months before the interview

E-commerce : last year before the interview

Background variables : the week before the interview 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI in households with telephone. The proportion of CAPI collection is 38% of final sample.

Stand-alone survey, voluntary according to Spanish law.

Population covered: age 16-74. A specific module for children aged 10-15 years is included, as well as for individuals aged 75 or older.

The survey covers the whole country.

 

Population size:

Households: 16 058 328

Individuals: 34 494 505

Net Sample size:

Households: 13 678

Individuals:  13 026

 

Overall response rate:

Households: 76.6%       Individuals: 75.7%

Main methodological differences compared to previous survey(s): None.

 

 

Country: Spain

Year: 2014

Title: Survey on Information and Communication Technologies Equipment and Use in Households  (ICT-H 2014)

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 20 January – 16 May 2014

Sampling and statistical methodology:

 

The sampling frame for primary sampling units is a census sections' list continuously updated in order to incorporate any possible variations.

For secondary sampling units the sampling frame is obtained through exploitation of the Population Register managed by INE, which gives the list of households.

 

A probability sampling design is used, with 3 sampling stages (geographical areas, households and individuals) and an explicit stratification at first stage.

The sampling method at first stage is the systematic sampling with probabilities proportional-to-size with stratification effect. The related auxiliary variables for stratification are municipalities.

The sampling unit at the ultimate stage is the individual. Within each household a person aged 16 or over was chosen with equal probability using the Kish random method. In addition, information is collected for all children aged 10 to 15 years.

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer : last three months before the interview

Use of Internet : last three months before the interview

E-commerce : last year before the interview

Background variables : the week before the interview 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI in households with telephone. The proportion of CAPI collection is 38.8% of final sample.

Stand-alone survey, voluntary according to Spanish law.

Population covered: age 16-74. A specific module for children aged 10-15 years is included, as well as for individuals aged 75 or older.

The survey covers the whole country.

 

Population size:

Households: 15 974 340

Individuals:   34 452 655

Net Sample size:

Households: 13 771

Individuals:  13 087

 

Overall response rate:

Households: 76.9%       Individuals: 75.7%

Main methodological differences compared to previous survey(s):

In the survey of 2011 was started a process of change in the distribution of the sample in order to assure a minimum sample size in the smallest NUTS2. As this is a continuous survey, changes have been extended along the time to avoid as much as possible an impact in estimates. The whole process of change took place until 2014.

There are important differences in the way of collecting data compared to previous survey.  Due to organizational measures carried out in the NSI of Spain, the data (only in the CAPI system) have been collected by INE. This measure affects first interviews and personal voluntary following interviews, that is, more than one third of the sample.

 

 

Country: Spain

Year: 2013

Title: Survey on Equipment and Use of Information and Communication Technologies in Households  (ICT-H 2013)

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 28 January – 10 May 2013

Sampling and statistical methodology:

 

The sampling frame for primary sampling units is a census sections' list continuously updated in order to incorporate any possible variations.

For secondary sampling units the sampling frame is obtained through exploitation of the Population Register managed by INE, which gives the list of households.

 

A probability sampling design is used, with 3 sampling stages (geographical areas, households and individuals) and an explicit stratification at first stage.

The sampling method at first stage is the systematic sampling with probabilities proportional-to-size with stratification effect. The related auxiliary variables for stratification are municipalities.

The sampling unit at the ultimate stage is the individual. One or some individuals in the household are interviewed.

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer : last three months before the interview

Use of Internet : last three months before the interview

Internet commerce : last year before the interview

Background variables : the weeks before the interview 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI in households with telephone. The proportion of CAPI collection is around of 38%.

Stand-alone survey, voluntary according to Spanish law.

Population covered: age 16-74. A specific module for children aged 10-15 years is included, as well as for individuals older than 74.

The survey covers the whole country.

 

Population size:

Households: 15 871 781

Individuals:   34 684 150

Net Sample size:

Households: 13 892

Individuals:  13 199

 

Overall response rate:

Households: 79.1%       Individuals: 78.2%

Main methodological differences compared to previous survey(s):

In the survey of 2011 was started a process of change in the distribution of the sample in order to assure a minimum sample size in the smallest NUTS2. As this is a continuous survey, changes have been extended along the time to avoid as much as possible an impact in estimates. The whole process of change will take place along next two years (until 2014).

Data corresponding to the ICT HH 2013 survey have been calculated using estimated populations obtained from the Census 2011 and they are not comparable with data from earlier periods. In next months, standardised series will be transmitted with the revision of the macro and micro data files.

Until 2012, external information used for calibration of individuals took into account the age groups and gender for each autonomous community (NUTS2). Since 2013 the nationality of individuals 's also included for each NUTS2 as auxiliary variable for calibration. This external information required for calibration also is the result of estimates obtained from the last Census.

 

Country: Spain

Year: 2012

Title: Survey on Equipment and Use of Information and Communication Technologies in Households  (ICT-H 2012)

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 23rd January – 11th May 2012

Sampling and statistical methodology:

The sampling frame is the Population Register managed by INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community (NUTS 2) to represent it. The sampling type used is a three-staged stratified sampling. Primary sampling units (PSU) are census sections (geographical areas). Secondary sampling units (SSU) are the main family households and final units are people aged 16 or over. The stratification criterion used for PSU’s is the size of the municipalities to which the section belongs. There are a maximum of six strata in each NUTS2.

 

SAMPLE ALLOCATION

The sample was distributed among autonomous communities using a compromise between uniform and proportional to size allocation. Allocation among strata is proportional to their size, but ensuring that the number of sections per stratum in each autonomous community is a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section. In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section; so this procedure leads us to obtain self-weighted samples of households in each stratum.

In a third-stage, and within each household, a person aged 16 or over was chosen with equal probability using the Kish random method. In addition, information is collected for all children aged 10 to 15 years. 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer : last three months before the interview

Use of Internet : last three months before the interview

Internet commerce : last year before the interview

Background variables : the week before the interview 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI in households with telephone. The proportion of CAPI collection is around of 37%.

Stand-alone survey, voluntary according to Spanish law.

Population covered:

In the gross sample size, all households are covered and the population 15 years and over (specific module for “children“ between 10-15 years). Also 75 or over covered.

The survey covers the whole country.

 

Population size:

Households: 15.529.687

Individuals:   34.484.188

Net Sample size:

Households: 14.109 (Eurostat Scope)

Individuals:  13.395 (Eurostat Scope)

 

Overall response rate:

Households: 79,2%       Individuals: 78,0%

Main methodological differences compared to previous survey(s):

In the survey of 2011 was started a process of change in the distribution of the sample in order to assure a minimum sample size in the smallest NUTS2. As this is a continuous survey, changes have been extended along time to avoid as much as possible an impact in estimates. The whole process of change will take place along next two years (until 2014).

There is not any change in methodology applied in survey 2012. The statistical approach is a rotating panel with a quarter of sample renewed every occasion. One person aged 16 or over is asked in each selected household. In addition, information is collected for all children aged 10 to 15 years.

See also methodological summary – Nature of the basic data - footnotes

 

Country: Spain

Year: 2011

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey ( ICT-H 2011 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 17th January – 13th May 2011

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community (Nuts 2)  to represent it. The sampling type used is a three-staged stratified design. The first- stage design are the census sections; the second-stage units are the main family households and the third-stage unit is one person aged 16 or over per household selected in second-stage. The stratification criterion used is the sized of the municipalities to which the section belongs. There are a maximum of six strata in each NUTS2.

SIZE OF SAMPLING AFFIXATION.

The sample was distributed among autonomous communities using a compromise between uniform and proportional affixation to the size of the community. Between strata, affixation is proportional to their size, also upholding that the number of sections per stratum in each autonomous community be a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section. In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section; this procedure that leads us to obtain self-weighted samples of households in each stratum.

In a third-stage, and within each household , a person aged 16 or over was chosen with equal probability using the Kish random method , as well children aged from 10 to 15 .

 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer/use of internet : last three months before the interview

Internet commerce : last year before the interview

Background variables: the week before the interview

 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI

Stand-alone survey, voluntary acc to Spanish law.

Population covered:

In the gross sample size, all households are covered and the population 15 years and over (specific module for “children“ between 10-14 years).

The survey covers the whole country.

 

Population size:

Households: 15.494.265

Individuals:   34.576.941

Net Sample size:

Households: 16649 (Eurostat Scope)

Individuals:  15801 (Eurostat Scope)

 

Overall response rate:

Households: 76,7%       Individuals: 75,4%

Main methodological differences compared to previous survey(s):

Change in the distribution of the sample in order to assure a minimum sample size in the smallest Nuts2. As this is a continuous survey, changes have been extended along time to avoid as much as possible an impact in estimates. The whole process of change will take place along next three years.

Important differences in the way of collecting data compared to previous survey:

1- outsourcing. Due to organization measures carried out in the NSI of Spain, the data collection (only in the CAPI) has been outsourced. This measure affects first interviews and personal voluntary following interviews, that is, one third of the sample.

The private company collected the data with computers and software property of the INE.

2- A new collecting data software. In both systems CAPI and CATI, data has been collected using a new collecting data software, entirely developed by the computing Department at the INE, with new technologies and JAVA language. This is the first time this software is used, so at the beginning there has been some bugs and problems, latterly solved.

See also methodological summary – Nature of the basic data - footnotes

 

Country: Spain

Year: 2010

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey ( ICT-H 2010 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 18th January – 14th May 2010

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community (Nuts 2)  to represent it. The sampling type used is a three-staged stratified design. The first- stage design are the census sections; the second-stage units are the main family households and the third-stage unit is one person aged 16 or over per household selected in second-stage. The stratification criterion used is the sized of the municipalities to which the section belongs.

SIZE OF SAMPLING AFFIXATION.

The sample was distributed among autonomous communities using a compromise between uniform and proportional affixation to the size of the community. Between strata, affixation is proportional to their size, also upholding that the number of sections per stratum in each autonomous community be a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section. In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section; this procedure that leads us to obtain self-weighted samples of households in each stratum.

In a third-stage, and within each household , a person aged 16 or over was chosen with equal probability using the Kish random method , as well children aged from 10 to 15 .

 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer/use of internet : last three months before the interview

Internet commerce : last year before the interview

Background variables: the week before the interview

 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI

Stand-alone survey, voluntary acc to Spanish law.

Population covered:

In the gross sample size, all households are covered and the population 15 years and over (specific module for “children“ between 10-14 years).

The survey covers the whole country.

 

Population size:

Households: 15.303.137

Individuals:   34.611.522

Net Sample size:

Households: 17.248 (Eurostat Scope)

Individuals:  16.344 (Eurostat Scope)

 

Overall response rate:

Households: 79,3%       Individuals: 78,4%

Main methodological differences compared to previous survey(s):

No changes in methodology applied in survey 2009. The statistical approach Is a rotating panel with a quarter of sample renewed every occasion. One person aged 16 or over and all children between 10 and 15 years old are asked in each selected Household.

See also methodological summary – Nature of the basic data - footnotes

 

Country: Spain

Year: 2009

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey ( ICT-H 2009 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 19th January – 15th May 2009

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community (Nuts 2)  to represent it. The sampling type used is a three-staged stratified design. The first- stage design are the census sections; the second-stage units are the main family households and the third-stage unit is one person aged 16 or over per household selected in second-stage. The stratification criterion used is the sized of the municipalities to which the section belongs.

SIZE OF SAMPLING AFFIXATION.

The sample was distributed among autonomous communities using a compromise between uniform and proportional affixation to the size of the community. Between strata, affixation is proportional to their size, also upholding that the number of sections per stratum in each autonomous community be a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section. In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section; this procedure that leads us to obtain self-weighted samples of households in each stratum.

In a third-stage, and within each household , a person aged 16 or over was chosen with equal probability using the Kish random method , as well children aged from 10 to 15 .

 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer/use of internet : last three months before the interview

Internet commerce : last year before the interview

Background variables: the week before the interview

 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI

Stand-alone survey, voluntary acc to Spanish law.

Population covered:

In the gross sample size, all households are covered and the population 15 years and over (specific module for “children“ between 10-14 years).

The survey covers the whole country.

 

Population size:

Households: 15.315.159

Individuals:  34.668.378

Sample size:

Households: 24.935 (for national survey – HH with at least one person aged 16 or over)

Individuals:  24.935 (for national survey – Ind aged 16 or over)

 

Overall response rate:

Households: 79,7%       Individuals: 78,6%

Main methodological differences compared to previous survey(s):

No changes in methodology applied in survey 2008. The statistical approach Is a rotating panel with a quarter of sample renewed every occasion. One person aged 16 or over and all children between 10 and 15 years old are asked in each selected Household.

See also methodological summary – Nature of the basic data - footnotes

 

Country: Spain

Year: 2008

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey( ICT-H 2008 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 25 February – 6 June  2008

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community (Nuts 2)  to represent it. The sampling type used is a three-staged stratified design. The first- stage design are the census sections; the second-stage units are the main family households and the third-stage unit is one person aged 16 or over per household selected in second-stage. The stratification criterion used is the sized of the municipalities to which the section belongs.

SIZE OF SAMPLING .AFFIXATION.

The sample was distributed among autonomous communities using a compromise between uniform and proportional affixation to the size of the community. Between strata, affixation is proportional to their size, also upholding that the number of sections per stratum in each autonomous community be a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section. In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section; this procedure that leads us to obtain self-weighted samples of households in each stratum.

In a third-stage, and within each household , a person aged 16 or over was chosen with equal probability using the Kish random method , as well children aged from 10 to 15 .

 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer/use of internet : last three months before the interview

Internet commerce : last year before the interview

Background variables: the week before the interview

 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI

Stand-alone survey, voluntary acc to Spanish law.

Population covered:

In the gross sample size, all households are covered and the population 15 years and over (specific module for “children“ between 10-14 years).

The survey covers the whole country.

 

Population size:

Households: 15.100.000 provisionally

Individuals: Not yet availiable

Sample size:

Households: 25.757 (for national survey – HH with at least one person aged 16 or over)

Individuals:  25.757 (for national survey – Ind aged 16 or over)

 

Overall response rate:

Households:    80    Individuals: 79,2

Main methodological differences compared to previous survey(s):

No changes in methodology applied in survey 2007. The statistical approach Is a rotating panel with a quarter of sample renewed every occasion. One person aged 16 or over and all children between 10 and 15 years old are asked in each selected Household.

See also methodological summary – Nature of the basic data - footnotes

 

Country: Spain

Year: 2007

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey( ICT-H 2007 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 26 February – 11 June  2007

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community (Nuts 2)  to represent it. The sampling type used is a three-staged stratified design. The first- stage design are the census sections; the second-stage units are the main family households and the third-stage unit is one person aged 16 or over per household selected in second-stage. The stratification criterion used is the sized of the municipalities to which the section belongs.

SIZE OF SAMPLING .AFFIXATION.

The sample was distributed among autonomous communities using a compromise between uniform and proportional affixation to the size of the community. Between strata, affixation is proportional to their size, also upholding that the number of sections per stratum in each autonomous community be a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section. In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section; this procedure that leads us to obtain self-weighted samples of households in each stratum.

In a third-stage, and within each household , a person aged 16 or over was chosen with equal probability using the Kish random method , as well children aged from 10 to 15 .

 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer : last three months before the interview

Use of Internet : the same

Internet commerce : last year before the interview

Background variables: the week before the interview

 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI

Survey participation is voluntary acc to Spanish law

Population covered:

In the gross sample size, all households are covered and the population 15 years and over (specific module for “children“ between 10-14 years).

The survey covers the whole country.

 

Population size:

Households: 14.700.000 provisionally

Individuals: Not yet availiable

Sample size:

Households: 27.690 (for national survey – HH with at least one person aged 16 or over)

Individuals:  27.690 (for national survey – Ind aged 16 or over)

 

Overall response rate:

Households: 81,5% Individuals: 80,4%

Main methodological differences compared to previous survey(s):

The results in 2005 and 2006 are comparable.

One person aged 16 or over and all children between 10-15 years old are asked in each selected HH. For survey 2006 the corresponding ages were 15 and 10-14.

See also methodological summary – Nature of the basic data - footnotes

 

Country: Spain

Year: 2006

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey( ICT-H 2006 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 6 March – 23 June  2006

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community to represent it. The sampling type used is a three-staged stratified design. The first- stage design are the census sections; the second-stage units are the main family households aged 10 or over. The stratification criterion used is the sized of the municipalities to which the section belongs.

SIZE OF SAMPLING AFFIXATION.

The sample was distributed among autonomous communities using a compromise between uniform and proportional affixation to the size of the community. Between strata, affixation is proportional to their size, also upholding that the number of sections per stratum in each autonomous community be a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section. In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section; this procedure that leads us to obtain self-weighted samples of households in each stratum.

In a third-stage, and within each household , a person aged 15 or over was chosen with equal probability using the Kish random method , as well children aged from 10 to 14 .

 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer : last three months before the interview

Use of Internet : the same

Internet commerce : last year before the interview

Background variables: the week before the interview

 

Collection method:

Computer assisted personal interview (CAPI) and Computer assisted telephone interview (CATI). First interview for Household is conducted by CAPI (25% of sample renewed on each occasion) and following interviews are conducted by CATI

Survey participation is voluntary acc to Spanish law

Population covered:

In the gross sample size, all households are covered and the population 15 years and over (specific module for “children“ between 10-14 years).

The survey covers the whole country.

 

Population size:

Households: 14.426.826

Individuals: 33.375.644

Sample size:

Households: 27.422 (for national survey – HH with at least one person aged 15 or over)

Individuals:  27.422 (for national survey – Ind aged 15 or over)

 

Overall response rate: 84%

Main methodological differences compared to previous survey(s):

The results in 2005 and 2006 are comparable.

See also methodological summary – Nature of the basic data - footnotes

 

Country: Spain

Year: 2005

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey( ICT-H 2005 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 1 April – 15 July  2005

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

TYPE OF SAMPLING

An independent sample is designed in each autonomous community to represent it. The sampling type used is a three-staged stratified design . The first- stage design are the census sections; the second-stage units are the main family households aged 10 or over. The stratification criterion used is the sized of the municipalities to which the section belongs.

 

SIZE OF SAMPLING .AFFIXATION.

The sample was distributed among autonompus communities using a compromise between uniform and proportional affixation to the size of the community . Between strata, affixation is proportional to their size , also upholding that the number of sections per stratum in each autonomous community be a multiple of four.

 

SELECTION OF THE SAMPLE

The selection of first-stage units in each stratum was made using probability proportional to the size of each section . In a second stage, the households were selected by means of systematic sampling with random start and equal selection probabilities for each household in the section ; this procedure that leads us to obtain self-weighted samples of households in each stratum.

In a third-stage , and within each household , a person aged 15 or over was chosen with equal probability using the Kish random method , as well children aged from 10 to 14 .

 

Reference period:

Access to selected ICT technologies ( equipment )  : survey period

Use of computer : last month , three months and one year before the interview

Use of Internet : the same

Internet commerce : the same

 

 

Collection method:

Combination of telephone assisted interview (CATI ) and face-to-face interview assisted by hand-computer ( CAPI ). The quarter of the sample renewed is interviewed by CAPI ; the rest  by CATI method

Population covered:

In the gross sample size , all households are covered and the population 15 years and over ( and “children “ between 10-14 years ) . From the net sample size , households with all members aged over 74 years are excluded; also for the individuals younger than 16 or older than 74 .

The survey covers the whole country.

 

Population size:

Households: 13.986 .645

Individuals: 33.039.748

 

Sample size:

Households: approximately 25.263

Individuals:

 

Overall response rate: 86%

Main methodological differences compared to previous survey(s):

The results in 2004 and 2005 are comparable .

See also methodological summary – Nature of the basic data - footnotes

 

 

Country: Spain

Year: 2004

Title: Survey on Information and  Communication Technologies  Equipment and Use in Households Survey( ICT-H 2004 )

Organisation running the survey: INSTITUTO NACIONAL DE ESTADÍSTICA ( INE )

Survey period: 1 May – 30 July  2004

Sampling and statistical methodology:

The sampling frame is the Population Register managed by the INE and updated in a continuous way.

 

Stratification:

An independent sample is designed in each autonomous community to represent it . The sampling type used is a three- staged stratified design. The first-stage design are census sections. The second-stage units are the main family households aged 10 or over. The stratification criterion used is the sized of the municipalities to which the section belongs.

 

Reference period: dependent on the question – usually based from the survey period

 

Collection method:

Combination of telephone assisted interview (CATI) and face-to-face interview (CAPI). The quarter of the sample renewed and the sample assigned to the Basque autonomous community are interviewed by CAPI ; the rest by CATI.

Mandatory participation

 

Population covered:

10 to 74 years .People aged between 10-14 years are considered “ children “ and people aged older than 14 years ( 15 or more ) are “ adults “.  The survey covers the whole country.

 

Population size:

Households: 14.731.651

Individuals: 36.134.506

 

Sample size:

Households: approximately 19.366

Individuals:

 

Overall response rate: 96.6%

Main methodological differences compared to previous survey(s):

The methodology applied in ICT-H 2002 survey is significantly different from the one in 2003 and 2004  because in 2002 ,  the survey was a module embedded in LFS questionnaire survey .Moreover , ( in 2002 ) all Internet users in the household are interviewed and the use of computer are asked only to the Internet users.

The statistical approach for the ICT-H 2003 and beyond is a  rotating panel “ without longitudinal dimension” . Every year , a quarter of the sample is renewed. The methodology is the same and one person aged 15 or over and all children aged from 10 to 14 are interviewed in each household . So , the results in 2003 and 2004 are comparable .

 

 

Country: Spain

Year: 2003

Title: Survey on Information and Communication Technology Equipment and Use in Households (TIC-H 2003)

Organisation running the survey: National Statistical Institute (INE) in cooperation with the Statistical Institute of Catalonia (IDESCAT), the Statistical Institute of Navarra (IEN) and the Basque Statistical Institute (EUSTAT)

Survey period: basically carried out during the second quarter of 2003

Sampling and statistical methodology:

Weighting:

Self-weighted samples of households in each stratum. Weighting to account for disproportional sampling using external information from the projections of population by age groups and sex in each Autonomous Community.

Stratification: Three-staged stratified design. The first-stage units are census sections.  The second-stage units are the main family households.  During the third-stage, a person in each household aged 15 or over.

 

·  Reference period: Second quarter of 2003

Collection vehicle and method: Different vehicles (regional data collection), CATI / face-to-face

Population covered: Aged 16-74

Population size:

Households          14264600

Population             32074779

Sample size: 20738 households (disproportional sampling)

Overall response rate: 68%

Basque country: 89%

Catalonia: 64%

Rest of Spain: 70%

Deviations from Eurostat model:

·         All children in the household  aged 10-14 years,  are interviewed about use of PC Internet and possession of mobile phone.

·         Definition of household type

 

SPAIN

 

Country: Spain

Year: 2002

Title: Household’s equipment and use of ICT 2002

Organisation running the survey: National Statistical Institute (INE)

Survey period: June-July 02

Sampling and statistical methodology:

Weighting:

Population sample and household sample: The Spanish population aged 16  and older. Additionally: All household members that use the Internet are interviewed. The sampling type was two-staged and stratified.

Stratification: First stage units: census sections; second stage units: main family dwellings

 

·  Reference period: 1st quarter 2002

Collection vehicle and method: Labour Force Survey, CATI / face-to-face

Population covered: Aged 16+

Population size:

Households          13712940

Population             31095216

Sample size: 20 000 households / aprox. 42 000 individuals.

Overall response rate: 86.4% households

Deviations from Eurostat model:

·         Definition of household type