Integrated Database for Labour Market Research

Summary

Strengths: This database covers the entire Danish population over time, which makes possible to analyse changes in labour market participation. Data further includes information about workplaces, which makes it possible to link information about colleagues and analyse the composition of the workplaces. Weaknesses: There are some breaks in data over time. See the documentation for more information: http://www.dst.dk/da/Statistik/dokumentation/kvalitetsdeklarationer/ida-databasen.aspx

Type of data

Data Source
Registry

Type of Study
Other: Registries

Data gathering method
Registries

Access to data

Conditions of access

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

Formats available
SAS

Coverage

Coverage Years of collection, reference years, and sample sizes
Data collection ongoing since 1980. The sample covers the entire Danish population.

First year of collection
1980

Stratification if applicable

Base used for sampling

Geographical coverage and breakdowns
Covers the entire population

Age range
Covers the entire age range

Statistical representativeness
Population representative

Coverage of main and cross-cutting topics
The database includes approximately 100 variables. The IDA database covers the employment status, and workplaces and companies of the entire Danish population. People and companies are linked, and people can be characterised by information about their work place and vice versa.

Linkage

Standardisation
From 1996, Statistics Denmark has classified the economic characteristics for the population into socio-economic categories and within these, further by occupational codes according to the DISCO-88 norm, which is a Danish version of the International Standard Classification of Occupations (ISCO).

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

Data quality

Entry errors if applicable
N.A.

Breaks
In 2008, there is a break since the data collection method changed. There is another break in 1996 regarding job designation. This break is caused by the introduction of DISCO 88. See the documentation for more information: http://www.dst.dk/da/Statistik/dokumentation/kvalitetsdeklarationer/ida-databasen.aspx

Consistency of terminology or coding used during collection
DISCO 88

Governance

Contact information
Statistics Denmark
Statistics Denmark
Sejroegade 11
DK-2100 Copenhagen Denmark Phone: (+45)39173130
Email: dst(at)dst.dk
Url: http://www.dst.dk/da/Statistik/dokumentation/kvalitetsdeklarationer/ida-databasen.aspx

Timeliness, transparency
N.A.