Table 3.

Multivariable Logistic Regression Analysis of OC use associated with BC among TPW

Variables	ORc	95%CI	ORadj	95%CI	p-value
OC use
No	1		1
Yes	3.16	2.21-4.54	3.39	1.99-5.75	<0.001*
Duration of OC use (yrs)
0	1		1
1-5	1.72	1.01-2.90	1.72	0.90-3.25	0.099
6-10	4.2	2.48-7.17	3.91	1.99-7.64	<0.001*
>10	4.71	2.59-8.72	4.23	2.05-8.71	<0.001*

OR_c, crude OR; OR_adj, adjusted OR for family history of BC; history of benign breast tumor, age at menarche, parity, miscarriage, passive smoking, multivitamin use and BMI;

^*significant at p-value <0.05