Table 5.

Associations between the z-scores of markers of obesity and the risk of infertility.

	OR1 (95%CI2), P-value
z-scores	WWI	BMI	WC	ABSI
Continuous	1.33 (1.18, 1.51) <0.001	1.30 (1.15, 1.45) <0.001	1.28 (1.22, 1.55) <0.001	1.21 (1.07, 1.37) 0.0022

Adjusted for age, ratio of family income to poverty, race, education level, marital status, smoked at least 100 cigarettes, had at least 12 alcohol drinks/1 year, age when first menstrual period occurred, ever treated for a pelvic infection/PID, ever taken birth control pills, had regular periods in past 12 months.