Table 3.

Unadjusted Associations of Environmental Tobacco Smoke Exposure and Active Smoking to Risk of Late-Diagnosis Incident Fibroids in the SWAN Study Population

		a) All Women (n=2575)					b) Restricted to Non-Hispanic White (n=1255)				c) Restricted to African-Americans (n=631)
		Cases	OR	95%CI Lower	95%CI Upper		Cases	OR	95%CI Lower	95%CI Upper	Cases	OR	95%CI Lower	95%CI Upper
Environmental Tobacco Smoke Exposure
≥1 vs. 0 person-hours/week		512	1.29	1.08	1.55	*	251	1.18	0.91	1.52	162	1.12	0.80	1.57
Active Smoking
Former Smoker vs. Never		512	0.65	0.31	1.39		251	0.36	0.09	1.45	162	0.52	0.16	1.65
Current Smoker vs. Never		512	0.82	0.63	1.07		251	0.77	0.52	1.15	162	0.61	0.40	0.93	*

^*p-values < 0.05 were considered statistically significant.

Unadjusted discrete-time proportional odds models were used to obtain the conditional odds ratio (OR) of incident self-reported diagnosis of fibroids. Time-varying ETS exposure was lagged by 1 follow-up year. All analyses were restricted to women without self-reported fibroids and cancer at baseline.