Correlations of bone stiffness index with covariates in men and women aged 29−32 years.

K-BDI, the Korean version of the Beck Depression Inventory; HDL, high-density lipoprotein; hsCRP, high-sensitivity C-reactive protein.
aAt-risk drinking was defined as consuming an average of more than 2 drinks/day for men and 1 drink/day for women.
bThe number of children was classified into 0, 1−2, and ≥3.
cDuration of breastfeeding was classified into 0, 1−11, and ≥12 months.
dAdjusted for age, body mass index, at risk drinking (>2 drinks/day), and regular exercise (≥1/week) in men and age, body mass index, at risk drinking (>1 drink/day), age at menarche, and duration of breastfeeding (0, 1−11, and ≥12 months) in women.