Table III.

Multivariate logistic regression analysis by considering the breast density (low/high) as the dependent variable

Covariates	OR	95% CI	P-value
BMI	0.87	0.79–0.95	0.002
Vitamin D intake	0.35	0.16–0.81	0.01
The family history of breast surgery	2.54	0.96–6.67	0.06

Variables age, group (PCOS/control), BMI, WHR, vitamin D intake, physical activity, and positive family history of breast surgery were entered to the model

OR: Odds ratio; CI: Confidence interval; BMI: Body mass index; PCOS: Polycystic ovarian syndrome