Table 2.

Weighted multivariate logistic regression of the association between BRI and infertility.

	Non-adjusted model		Model I		Model II
	OR [95% CI]	p value	OR [95% CI]	p value	OR [95% CI]	p value
Continuous BRI	1.12 [1.07,1.19]	<0.001***	1.11 [1.05,1.17]	<0.001***	1.12 [1.05,1.19]	<0.001***
BRI -Q1	Reference	-	Reference	-	Reference	-
BRI -Q2	1.70 [1.03, 2.80]	0.01*	1.70 [1.03, 2.80]	0.04*	1.82 [1.06, 3.13]	0.03*
BRI -Q3	1.88 [1.24, 2.83]	<0.001***	1.88 [1.24, 2.83]	0.004**	2.05 [1.26, 3.33]	0.01*
BRI -Q4	2.60 [1.59, 4.24]	<0.001***	2.60 [1.59, 4.24]	<0.001***	2.94 [1.70, 5.08]	<0.001***

Data are presented as OR [95% confidence interval]. Model I adjusted for age, marital status and race/ethnicity. Model II adjusted for age, marital status and race/ethnicity, education levels, family income, BMI, regular menstrual periods, pelvic infection, female hormones taken, birth control pills taken, drinking history and smoking history. BRI, body round index. ***p value < 0.001, **p value < 0.01, *p value < 0.05.