Table. Positive CTPA Examinations for All Physiciansa.
| Study Volume | Physicians, No. | CTPA Studies, No. | Positive CTPA, No. (%) | ER Physicians, No. (%) | Other Physicians, No. (%) |
|---|---|---|---|---|---|
| 1-10 | 145 | 411 | 85 (20.7) | 13 (9.0) | 132 (91.0) |
| 11-20 | 14 | 228 | 37 (16.2) | 8 (57.1) | 6 (42.9) |
| 21-30 | 9 | 198 | 30 (15.2) | 8 (88.9) | 1 (11.1) |
| 31-40 | 6 | 179 | 20 (11.2) | 5 (83.3) | 1 (16.7) |
| 41-50 | 5 | 219 | 19 (8.7) | 5 (100) | 0 |
| >50 | 3 | 159 | 8 (5.0) | 3 (100) | 0 |
| Total | 182 | 1394 | 199 (14.2) | 42 (23.1) | 140 (76.9) |
Abbreviations: CTPA, CT pulmonary angiogram; ER, emergency department; NA, not applicable.
a
Physicians were stratified by the total study volume they ordered during the observation period.