Pubertal timing and breast density in young women: a prospective cohort study

Table 3 Geometric mean (95% confidence interval (CI)) from mixed-effect regression models, stratified by median of thelarche, menarche, and thelarche-to-menarche tempo in relation to percent dense breast volume (%DBV)

The means and 95% confidence intervals are generated from stratified models including the same covariates included in model 3 of Table 2. The following variables were adjusted as fixed effects: adult covariates, including parity (nulliparous vs parous), duration of hormone use (years, continuous), education (some college or less (reference), bachelor degree, graduate degree), race (white vs. non-white), smoking status (never vs ever), and whole-body percent fat measured by DXA (%, continuous), height (continuous), and BMI at 8–10 years of age expressed as a z-score relative to CDC 2000 Growth Charts. Clinic was adjusted for as a random effect