title: Projected changes in breast cancer incidence due to the trend toward delayed childbearing.
abstract: Because there has been a recent trend toward delay of childbearing in the United States, women in the birth cohort of 1945-49 will have an estimated 5 per cent greater incidence of breast cancer, and those in the cohort of 1950-54 an estimated 9 per cent greater incidence compared with the cohort of 1935-39, which had the distribution of age at first birth most favorable for breast cancer risk.
mesh_terms: D000328:Adult; D001741:Black or African American; D001943:Breast Neoplasms / Q000453:epidemiology / Q000209:etiology*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008423:Maternal Age; D012306:Risk; D014481:United States; D044465:White People