Table 4 Logistic regression showing odds ratio for different clinical presentations as predictors of potentially beneficial ultrasound examination. CI: Confidence Interval, (n = 397), 5 observations left out from fever and 1 left out from abdominal trauma as these groups had no patients with no relevant ultrasound
Variable | Patients n | Beneficial ultrasound n (%) | Crude analysis | Adjusted analysis | ||||
|---|---|---|---|---|---|---|---|---|
OR | 95% CI | p-value | OR | 95% CI | p-value | |||
Clinical presentation | ||||||||
 Abdominal pain | 108 | 47 (43.5) | 5.0 | (2.0; 12.2) | < 0.001 | 5.2 | (2.0; 13.4) | 0.001 |
 Chest pain | 41 | 13 (31.7) | 0.7 | (0.3; 1.9) | 0.554 | 0.9 | (0.4; 2.2) | 0.797 |
 Fever | 5 | 5 (100) | – | – | – | – | – | – |
 Chest trauma | 3 | 1 (33.3) | 4.0 | (0.3; 50.8) | 0.287 | 5.7 | (0.4; 77.7) | 0.191 |
 Abdominal Trauma | 1 | 0 (0) | – | – | – | – | – | – |
 Dyspnea | 40 | 26 (65.0) | 11.7 | (4.3; 31.9) | < 0.001 | 10.6 | (3.6; 31.2) | < 0.001 |
 Syncope | 26 | 9 (34.6) | 2.9 | (1.0; 8.4) | 0.044 | 3.3 | (1.1; 10.2) | 0.038 |
 Dizziness | 11 | 5 (45.4) | 4.8 | (1.1; 20.5) | 0.036 | 3.4 | (0.7; 15.5) | 0.113 |
 Traffic accident | 28 | 3 (10.7) | 0.9 | (0.2; 3.6) | 0.835 | 0.9 | (0.2; 3.9) | 0.912 |
 Minor orthopedic complaint | 110 | 10 (9.1) | 0.7 | (0.3; 2.1) | 0.559 | 1.7 | (0.5; 5.5) | 0.371 |
 All Other | 95 | 24 (25.3) | 1.4 | (0.7; 3.1) | 0.370 | 1.4 | (0.6; 3.3) | 0.407 |