Patient and NHN examination characteristics for which a second opinion report was requested (n = 994)
| Variable | No. (%) |
|---|---|
| Sex | |
| Female | 541 (54.4) |
| Male | 453 (45.6) |
| Hospital status | |
| Inpatient | 76 (7.6) |
| Outpatient | 918 (92.4) |
| No. of imaging examinations evaluated for the second opinion reporta | |
| 1 | 864 (86.9) |
| 2 | 121 (12.2) |
| 3 | 8 (0.8) |
| 4 | 1 (0.1) |
| Imaging modalities for the second opinion reportb | |
| CT | 224 (19.8) |
| MR imaging | 901 (79.5) |
| Ultrasonography | 7 (0.6) |
| X-ray | 2 (0.2) |
↵a A second opinion report is not necessarily based on 1 sole imaging examination—eg, both MR imaging and CT can be re-evaluated for the second opinion report.
↵b Because some second opinion reports involved an evaluation of multiple imaging modalities, the numbers of imaging modalities used for second opinion reports (n = 1134) are higher than the number of reports included in this study.