Best fitting regression lines (shaded area = 95% CI) relating a) offspring BW to father’s BW stratified on tertiles of mother’s adult standing height, and b) offspring BW to female participant’s BW stratified on tertiles of their own adult standing height.

<p>Parental BW plotted as residuals adjusted for parent’s gestational age at birth. Offspring BW plotted as residuals adjusted for mother’s age, offspring’s gestational age at birth, first born status, offspring sex, prenatal care, and mother’s work status during pregnancy. Adjusted regression coefficients (slopes) for each tertile of mother’s height (kg offspring BW/kg parental BW) = 0.06±0.10, 0.18±0.09*, 0.12±0.09 for father’s BW models, and 0.22±0.09*, 0.33±0.08*, 0.24±0.10* for mother’s BW models, *p<0.05.