Table 4.

Logistic regression (aOR and 95 % CI) for having an abnormal result by mammogram indication

	Screening indication				Diagnostic indication
	Odds ratio	Lower 95 % CI	Upper 95 % CI	p value	Odds ratio	Lower 95 % CI	Upper 95 % CI	p value
Age group (years)
40–49	1.0	REF			1.0	REF
50–64	0.65	0.64	0.66	<0.0001	0.82	0.80	0.83	<0.0001
Race/ethnicity
White, non-Hispanic	1.0	REF			1.0	REF
Black, non-Hispanic	0.97	0.96	0.99	0.0005	1.01	0.98	1.04	0.5054
Asian/Pacific Islander	0.83	0.81	0.85	<0.0001	1.02	0.97	1.08	0.4643
American Indian/Alaska   Native	0.80	0.77	0.83	<0.0001	1.13	1.05	1.22	0.0019
Hispanic	0.90	0.89	0.91	<0.0001	0.86	0.84	0.88	<0.0001
Multiracial/unknown	0.96	0.92	0.9997	0.0483	0.94	0.88	1.01	0.0827
Metro	1.0	REF			1.0	REF
Urban	0.85	0.84	0.86	<0.0001	0.87	0.85	0.89	<0.0001
Rural	0.79	0.76	0.81	<0.0001	0.86	0.81	0.91	<0.0001
Unknown	1.54	1.39	1.70	<0.0001	1.07	0.84	1.35	0.6052
Region
West	1.0	REF			1.0	REF
Northeast	1.36	1.33	1.38	<0.0001	1.19	1.15	1.23	<0.0001
Midwest	1.04	1.02	1.06	<0.0001	1.06	1.03	1.09	<0.0001
South	1.15	1.13	1.17	<0.0001	0.85	0.83	0.87	<0.0001