Figure 1.

The association of dietary total vitamin A equivalents intake with (A) ER+ and (B) ER− breast cancer risk, overall and by menopausal status, adjusted for age, education, BMI, family history of breast cancer, age at menarche, parity, age at first birth, menopausal status, HT use, and duration of oral contraceptive use, smoking status, alcohol use, and total energy intake. All I²= 0 (P > 0.05). Abbreviations: BWHS, Black Women's Health Study; ER−, estrogen receptor negative; ER+, estrogen receptor positive; HT, hormone therapy; MEC, Multiethnic Cohort Study; Q, quintile; WCHS, Women's Circle of Health Study.