Table 2:
Diagnostic accuracy of single-pass pan-scanning, by group and body region
| Region | No. of injuries | Prevalence of injuries, % | Sensitivity | Specificity | Positive predictive value, % (95% CI) | Negative predictive value, % (95% CI) | ||
|---|---|---|---|---|---|---|---|---|
| No. of true positive pan-scan results / total number of injuries | % (95% CI) | No. of true negative pan-scan results / total number of negative results | % (95% CI) | |||||
| All patients,n = 982 | ||||||||
| Head and neck | 338 | 34.0 | 286/338 | 84.6 (80.3–88.3) | 637/644 | 98.9 (97.8–99.6) | 97.6 (95.1–99.0) | 92.5 (90.2–94.3) |
| Face | 191 | 19.0 | 152/191 | 79.6 (73.2–85.1) | 784/791 | 99.1 (98.2–99.6) | 95.6 (91.1–98.2) | 95.3 (93.6–96.6) |
| Chest | 362 | 37.0 | 314/362 | 86.7 (82.8–90.1) | 613/620 | 98.9 (97.7–99.5) | 97.8 (95.6–99.1) | 92.7 (90.5–94.6) |
| Abdomen | 252 | 26.0 | 216/254 | 85.7 (80.8–89.8) | 712/770 | 97.5 (96.1–98.5) | 92.3 (88.1–95.4) | 95.2 (93.4–96.6) |
| Pelvis | 145 | 15.0 | 125/145 | 86.2 (79.5–91.4) | 835/837 | 99.8 (99.1–100) | 98.4 (94.4–99.8) | 97.7 (96.4–98.6) |
| Patients with multiple trauma,n = 360 | ||||||||
| Head and neck | 239 | 66.0 | 220/239 | 92.1 (87.9–95.1) | 119/121 | 98.3 (94.2–99.8) | 99.1 (96.8–99.9) | 86.2 (79.3–91.5) |
| Face | 102 | 28.0 | 87/102 | 85.3 (76.9–91.5) | 253/258 | 98.1 (95.5–99.4) | 94.6 (87.8–98.2) | 94.4 (90.9–96.8) |
| Chest | 220 | 61.0 | 197/220 | 89.5 (84.7–93.3) | 137/140 | 97.9 (93.9–99.6) | 98.5 (95.7–99.7) | 85.6 (79.2–90.7) |
| Abdomen | 141 | 39.0 | 125/141 | 88.7 (82.2–93.4) | 209/219 | 95.4 (91.8–97.8) | 92.6 (86.8–96.4) | 92.9 (88.7–95.9) |
| Pelvis | 84 | 23.0 | 75/84 | 89.3 (80.6–95.0) | 274/276 | 99.3 (97.4–99.9) | 97.4 (90.9–99.7) | 96.8 (94.0–98.5) |
Note: CI = confidence interval.