Explore data and samples

We have a vast amount of biological samples and phenotypic, environmental, genetic and linkage data gathered from different cohort groups over the past 30 years. There are several ways you can explore this resource.

Explore available data

There are three simple ways to explore the data that is available for research. 

  • Our data dictionary (zip file), which includes detailed information, including frequencies, on all the data that are currently available 

  • Our variable catalogue (zip file), which is a simple list of all ALSPAC variable names and labels that are available, grouped according to data source and timepoint

  • Our variable search tool, which allows simple searching across variable names and labels to help with identifying what data might be available.  We are aware that our search tool is currently experiencing issues, we recommend refreshing your page (it may take more one then one refresh) - this usually works. Apologies for any inconvenience whilst we investigate.


External search options for exploring our data include:

If we have the data and samples you require, you can make an access request.

Explore external datasets

A number of ALSPAC datasets can be accessed externally, without the need for project proposals or exec permission, for specific research or for training purposes. A list is available here.

 Cohort profiles

We have published cohort profiles for all generations of the study which provide details on recruitment and representativeness.

Data summaries

If you cannot find the information you are looking for, or would like to talk to a member of our team about accessing data or samples, please email alspac-data@bristol.ac.uk (data) or bbl-info@bristol.ac.uk (samples).

Recent data releases

Update to the methylation dataset - combining new data from G1 with the EPIC array with existing Illumina 450k array data from both G0 and G1. See our page on Genomics data.
Life@29+ Questionnaire - completed by G1, includes questions about environmental exposures, climate change, life events, education and eployment and entrepreneurship.
G0 partners cohort profile - read about this new dataset in a data note published on Wellcome Open, which provides an overview of the partners of the original study mothers.
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