Table 1.
Characteristics of 123 radiologists included in the study
| Radiologist characteristic | No. (%) of radiologists | No. (%) of diagnostic mammograms |
|
|---|---|---|---|
| With cancer | Without cancer | ||
| Demographics | |||
| Radiologist's age, y | |||
| 34–44 | 39 (31.7) | 381 (26.8) | 8813 (25.6) |
| 45–54 | 47 (38.2) | 690 (48.5) | 16 202 (47.0) |
| ≥55 | 37 (30.1) | 353 (24.8) | 9456 (27.4) |
| Radiologist's sex | |||
| Male | 96 (78.0) | 1014 (71.2) | 25 602 (74.3) |
| Female | 27 (22.0) | 410 (28.8) | 8869 (25.7) |
| Experience | |||
| In mammography interpretation, y | |||
| <10 | 29 (23.6) | 190 (13.3) | 4678 (13.6) |
| 10–19 | 57 (46.3) | 877 (61.6) | 19 944 (57.9) |
| ≥20 | 37 (30.1) | 357 (25.1) | 9849 (28.6) |
| Fellowship training in breast imaging | |||
| No | 119 (96.7) | 1398 (98.2) | 33 862 (98.2) |
| Yes | 4 (3.3) | 26 (1.8) | 609 (1.8) |
| % of time working in breast imaging | |||
| <20 | 55 (44.7) | 417 (29.3) | 11 531 (33.5) |
| 20–39 | 52 (42.3) | 818 (57.4) | 18 816 (54.6) |
| ≥40 | 16 (13.0) | 189 (13.3) | 4124 (12.0) |
| No. of mammograms interpreted in prior year | |||
| 500–1000 | 32 (26.0) | 171 (12.0) | 4320 (12.5) |
| 1001–2000 | 46 (37.4) | 529 (37.1) | 12 008 (34.8) |
| >2000 | 45 (36.6) | 724 (50.8) | 18 143 (52.6) |
| Practice characteristics | |||
| Primary affiliation with an academic medical center | |||
| No | 116 (94.3) | 1373 (96.4) | 33 377 (96.8) |
| Yes | 7 (5.7) | 51 (3.6) | 1094 (3.2) |
| % of mammograms interpreted that were diagnostic | |||
| 0–24 | 61 (49.6) | 679 (47.7) | 17 145 (49.7) |
| 25–49 | 53 (43.1) | 667 (46.8) | 15 052 (43.7) |
| 50–100 | 9 (7.3) | 78 (5.5) | 2274 (6.6) |
| Performed breast biopsy examination in prior year | |||
| No | 33 (26.8) | 258 (18.1) | 7101 (20.6) |
| Yes | 90 (73.2) | 1166 (81.9) | 27 370 (79.4) |