Within and between sib-pair effects of milk/milk product consumption on obesity and waist circumference among men (n = 3698) and women (n = 2659) (Estimates from a population-average approach).

aModel 1 is unadjusted.
bModel 2 is adjusted for socioeconomic and demographic characteristics: age, education, standard of living, and migration status.
cModel 3 is adjusted for behavioral factors: tobacco consumption, alcohol consumption, MET hours/day and energy intake.
dModel 4 is adjusted for all the above factors.