Between 1993 and 1998, more than 161,000 women between 50 and 79 years of age were enrolled in the Women’s Health Initiative (WHI). The WHI Extension Study 2005-2010 enrolled consenting participants from the original WHI study for an additional five years of follow-up, from 2005 to 2010. Annual updates on health outcomes are collected by mail from the 115,400 participants enrolled in the Extension Study. The WHI Extension Studies took place in clinical centres across the United States of America.
Study design
Cohort
Number of participants at first data collection
115,400 (participants)
Age at first data collection
Varied (participants)
Participant year of birth
Varied (participants)
Participant sex
Female
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
2005 (WHI extension study)
1993 (WHI original)
Primary Institutions
Women's Health Initiative (WHI)
Profile paper DOI
Not available
Funders
National Heart, Lung, and Blood Institute (NHLBI)
National Institutes of Health (NIH)
U.S. Department of Health and Human Services (DHHS)
Ongoing?
No
Data types collected
Engagement
Keywords
Consortia and dataset groups