Figure 2.

Sensitivity analyses for the association between birth weight, rapid weight gain, and dense area (cm²), Early Determinants of Mammographic Density study, United States, 1959–2008. Low birth weight (LBW) was defined as less than 2.5 kg; being small for gestational age (SGA) was defined as below the 10th percentile of within-cohort birth weight/gestational age; and preterm was defined as less than 37 weeks’ gestational age. β estimate for birth weight corresponds to a 1-kg increase. Rapid weight gain was defined as an increase of at least 1 major Centers for Disease Control and Prevention reference percentile (5th, 10th, 25th, 50th, 75th, 95th) relative to stable (staying within 1 major reference percentile). Models adjusted for birth weight, weight gain pattern in previous time periods, maternal prepregnancy body mass index, maternal weight gain, maternal age at registration, maternal education, prenatal smoking exposure, race/ethnicity, and adult body mass index. CI, confidence interval.