Table 5.

Adjusted Odds Ratios (95% CI) for factors associated with mammographic breast density among women in Karachi, Pakistan

Category	Heterogeneously dense MBD		Dense MBD
Variables	AOR	95% CI	AOR	95% CI
Age (years)
< 45	2.68	1.60, 4.49	4.83	2.54, 9.16
> 45	Ref		Ref
History of benign breast disease
Yes	1.90	1.14, 3.17	3.61	1.90, 6.86
No	Ref		Ref
BMI*	0.94	0.90, 0.99	0.81	0.76, 0.87

Ref is fatty/fibroglandular category. BI-RADS: Breast Imaging Reporting and Data System (fatty and scattered glandular dense = categories A and B, heterogeneously dense = C, dense = D)

AOR, adjusted odds ratio; 95% CI, 95% confidence interval; *mean (SD)

AORs adjusted for socioeconomic status, vitamin D, parity, diet, menopausal status/age at menopause, age at first birth, family history of breast cancer, exercise, and case–control status of women