Table 2.

Radiologist demographic and clinical practice characteristics and recall rate (N = 124 radiologists)^*

Characteristic	No.	%	Recall rate	Recall OR	95% CI	P
Radiologist demographics
Age, y
35–44	37	29.8	12.1	1.00	(referent)	.001
45–54	48	38.7	10.6	0.88	0.86 to 0.9
≥55	39	31.5	8.5	0.78	0.76 to 0.8
Sex
Male	96	77.4	9.8	1.00	(referent)	.47
Female	28	22.6	11.4	1.09	0.86 to 1.37
Practice type
Work full-time
No	32	26.0	10.9	1.00	(referent)	.11
Yes	91	74.0	9.9	0.95	0.93 to 1.04
Affiliation with an academic medical center
Yes	20	16.1	9.8	1.00	(referent)	.42
No	104	83.9	10.3	1.13	0.83 to 1.54
General experience in breast imaging
Years of mammography interpretation
<10	28	22.7	11.8	1.00	(referent)	.005
10–19	57	46.3	10.8	0.81	0.64 to 1.02
≥20	38	30.9	8.6	0.66	0.51 to 0.85
% of time spent working in breast imaging
<20	55	45.1	9.2	1.0	(referent)	.015
20–39	52	42.6	11.3	1.30	1.06 to 1.61
≥40	15	12.3	9.5	0.92	0.68 to 1.44
No. of mammograms interpreted in the past year
≤1000	31	25.2	7.6	1.0	(referent)	.002
1001–2000	46	37.4	11.1	1.51	1.12 to 1.82
>2000	46	37.4	10.4	1.29	0.97 to 1.35
% of mammograms interpreted in the past year that were screening mammograms
≤50	10	8.1	9.5	1.0	(referent)	.77
51–75	52	42.3	10.0	1.06	0.73 to 1.55
76–100	61	49.6	10.7	0.99	0.68 to 1.44

^*Frequencies may not add up to 124 due to missing responses. CI = confidence interval. OR = odds ratio. Recall rate is the rate of calling a mammogram positive. Odds ratios, confidence intervals, and omnibus P values (two-sided) were calculated using logistic regression adjusting for patient age, breast density, and prior mammography.