Uses of IT in the population

Summary

Strengths: The survey covers a representable sample of all adults in Denmark. The study is repeated each year and covers the time span of 2001 to today, making it possible to analyse changes over time. The questionnaire is based on Eurostat's recommendations and model questionnaire. Weaknesses: Changes in the method of data collection, sample size, and questions.

Type of data

Data Source
Survey

Type of Study
Other: Longitudinal survey

Data gathering method
Telephone

Access to data

Conditions of access

Type of available data (e.g. anonymised microdata, aggregated tables, etc.)
Anonymised microdata and aggregated tables

Formats available
SAS

Coverage

Coverage Years of collection, reference years, and sample sizes
Data collection ongoing since 2001. During the time between 2001 and 2006, approximately 1,000 completed interviews were carried out each month. From 2007-2009, approximately 4,300 interviews were carried out annually in April. In 2010, 4,600 completed interviews were conducted because the sample population was expanded (from 16-74 to 16-89 years). In 2011, 4,988 completed interviews (16-89 years) were conducted and in 2012, 5,224 interviews (16-89 years) were completed. This survey replaces the study 'PCs and access to the Internet' (Pc'ere og adgang til internet) (1997-2000).

First year of collection
2001

Stratification if applicable
N.A.

Base used for sampling

Geographical coverage and breakdowns
Entire country

Age range
16-89

Statistical representativeness
Other, please specify

Coverage of main and cross-cutting topics
Covers access and use of the internet, including online purchases and the purpose of using it. This is reported for the population based on gender, age, occupation, family type, income, etc. There are also a few questions at the family/household level.

Linkage

Standardisation
Based on a questionnaire recommended by Eurostat.

Possibility of linkage among databases
Data can be linked to register data available at Statistics Denmark through an encrypted identification key.

Data quality

Entry errors if applicable
N.A.

Breaks
Changes in the sampling method and the age groups included. In the period 2001-2006, a sample was drawn every month, but since 2007, only one sample has been drawn each year. The age group covered was expanded in 2010, when the population aged 75-89 years was included.

Consistency of terminology or coding used during collection
The questions vary over time in order to reflect the rapid changes in computer technology.

Governance

Contact information
Justyna Wijas-Jensen
Statistics Denmark
Sejrøgade 11
2100 Copenhagen Denmark Phone: (+45)3917 3676
Email: jwj(at)dst.dk
Url: http://www.dst.dk/da/Statistik/dokumentation/kvalitetsdeklarationer/it-anvendelse-i-befolkningen.aspx

Timeliness, transparency
The results are published annually.