You are strongly encouraged to review the following resources to help you understand the WHI data.
Help with using the data files
Annually, the WHI CCC creates and releases a cumulative dataset for analysis. The corresponding data dictionaries provide a comprehensive directory of the available variables, including their distributions within the study population.
Ancillary studies provide data new to WHI. For new survey, clinical measurement, or intervention data, the data files and dictionaries are created by the ancillary study investigators and sent to the WHI. Use this listing to find the studies with these data.
If new specimen results were generated, see Existing Specimen Test Results.
Some sensitive data are not included in the dataset files, but are available for analysis. Approved investigators can contact the WHI Coordinating Center to set up an account on our Virtual Data Enclave to use these data.