Protein Intake by Source and Breast Cancer Incidence and Mortality: The Women's Health Initiative.

ABSTRACT:

Background

Prior studies of dietary protein intake and breast cancer have been mixed and were limited by dietary self-report measurement error.

Methods

Biomarker-calibrated total protein intake and estimated vegetable protein and animal protein intake were determined from baseline food frequency questionnaires in 100 024 Women's Health Initiative participants. Associations between total, animal, and vegetable protein intake and breast cancer incidence, deaths from breast cancer, and deaths after breast cancer were estimated using Cox proportional hazards regression. Breast cancers were verified by medical record review and survival outcomes enhanced by National Death Index queries. All statistical tests were 2-sided.

Results

After 14 years of follow-up, there were 634

SUBMITTER: Pan K 

PROVIDER: S-EPMC7768926 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature