WLS Data Documentation


Survey Instruments

View or download all survey instruments used to collect data from WLS participants since 1957.

Codebooks

Browse codebooks grouped by collection wave.

Genetic Data

We have two waves of genetic data. The first wave has ~7000 cases and information on ~80 SNPs. More information about the first wave of WLS genetic data can be found here. The second wave has ~9000 cases with genetic data from The Illumina HumonOmniExpress BeadChip and are available from dbGaP and from WLS. More information about the wave two data can be found here. Researchers wanting access to either wave of data should follow these instructions.

Non-Public Data

Read this if you need non-publicly available data to answer your research question.

Data Conventions and Forms of WLS data

Wondering what all those negative values mean and how we name variables? Read this.

Need help understanding the difference between wide-form and long-form WLS data? Read this.

Documentation for WLS Cross-Wave Harmonized Marriage Rosters

WLS staff combined information from each round of survey to create a marital history for each ever-married participant. View documentation for this roster here.


Supplementary Data

Documentation for Supplementary Data Available for download.

The data for the above files can be accessed here: Supplementary Data Files

Documentation for Data Available only by request

To request the data listed above please send email to wls@ssc.wisc.edu.

Scales (PDF)

Information about the scales constructed from the WLS data.

Retention and Response Rates (PDF)

Various ways of calculating retention and response rates of WLS 1957-2011.

Appendices

Read detailed information about WLS data collection and variable creation.

Search for variables in the WLS dataset.


Issues with the Data

Issues with the data or documentation? Let us know.
Please contact us if you notice any problems with the data or documentation.

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