Table 5.
Accuracy of Physician Clinical Impression to Identify Intra-abdominal Injury From Evidence Level 1 to 3 Studies
| Clinical Impression | Serial Likelihood Ratio (95% CI) |
|---|---|
| Probability estimate of injury based on overall clinical impression, %17a | |
| >50 | 11 (4.1–30) |
|
| |
| >10 to 50 | 8.9 (5.2–16) |
|
| |
| >5 to 10 | 2.5 (2.0–3.0) |
|
| |
| 1 to 5 | 0.46 (0.33–0.62) |
|
| |
| <1 | 0.21 (0.11–0.42) |
|
| |
| Overall clinical impression, ordinal ranking from no suspicion (1) to most likely to have an injury (5)25b | |
| 5 | 19 (7.7–48) |
|
| |
| 4 | 3.2 (1.6–6.5) |
|
| |
| 3 | 1.6 (1.1–2.3) |
|
| |
| 2 | 0.57 (0.32–1.0) |
|
| |
| 1 | 0.38 (0.24–0.61) |
a
Clinical impression established before Focused Assessment With Sonography for Trauma (FAST) examination was performed. When dichotomized into injury unlikely (<1%) vs injury possible (≥1%), injury possible has a likelihood ratio of 1.3 (95% CI, 1.2–1.4) and injury unlikely has a likelihood ratio of 0.21 (95% CI, 0.11–0.42).
b
Clinical impression established after FAST examination performed. When dichotomized into no suspicion (1) vs injury possible (>1), injury possible has a likelihood ratio of 1.6 (95% CI, 1.4–1.8) and no suspicion has a likelihood ratio of 0.38 (95% CI, 0.24–0.61).