Iowa Women's Health Study (IWHS)
The IWHS aimed to determine whether diet, body fat distribution, and other risk factors were related to cancer incidence. In 1986, the study recruited over 40,000 postmenopausal women in Iowa, United States of America, aged 55 to 69 years. Exposure and lifestyle information were collected in a baseline mailed survey and five follow-up surveys in 1987, 1989, 1992, 1997, and 2004. Cancer incidence and mortality were ascertained since 1986 by linkage to external data until 2014.
Study design
Cohort
Number of participants at first data collection
41,836 (participants)
Age at first data collection
55 - 69 years (participants)
Participant year of birth
Varied (participants)
Participant sex
Female
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1986
Primary Institutions
University of Iowa
University of Minnesota
Profile paper DOI
Funders
National Cancer Institute (NCI)
Ongoing?
No
Data types collected
- Secondary data
- Self-report questionnaire – paper or computer assisted
- None
- None
- Geographic, spatial & environmental data
- Healthcare data
- Mortality data
Engagement
Keywords
