Table 4.

Type II Endometrial Cancer and Tubal Ligation. Risk of type II endometrial cancers following tubal ligation using unadjusted, minimally adjusted and full multivariate models. Model results are restricted to events occurring before age 80.

Model Type	Estimated HR	95% CI	p-value
Unadjusted (univariable)	0.96	(0.62, 1.49)	0.871
Adjusted for age stratum at randomization and region	0.97	(0.63, 1.51)	0.900
Adjusted for age stratum at randomization, region, BMI, parity, diabetes, age at menopause, ethnicity (white vs. others) age at menarche, unopposed estrogen use, oral contraceptive use.	1.14	(0.69, 1.90)	0.601