Table 2.

Hazard of USMI based on age at OVH and weight at presentation of USMI and are based on a Cox proportional hazard regression

Change in OVH age or change in weight	HR	95% CI		P‐value
1 month increase in OVH age at 5 kg	1.02	0.87	1.19	.841
1 month increase in OVH age at 10 kg	0.98	0.87	1.12	.788
1 month increase in OVH age at 15 kg	0.95	0.86	1.05	.340
1 month increase in OVH age at 20 kg	0.92	0.84	1.00	.063
1 month increase in OVH age at 25 kg	0.89	0.82	0.97	.006
1 month increase in OVH age at 30 kg	0.86	0.78	0.94	.001
1 month increase in OVH age at 35 kg	0.83	0.74	0.93	.001
1 month increase in OVH age at 40 kg	0.81	0.70	0.92	.002
1 month increase in OVH age at 45 kg	0.78	0.66	0.92	.003
1 month increase in OVH age at 50 kg	0.75	0.62	0.92	.004

Hazard ratios are based on a Cox proportional hazard regression. OVH, ovariohysterectomy; HR, hazard ratio; CI, confidence interval.