Diagnostic performance of individual point-of-care ultrasound features
| Sensitivity % (95% CI) | Specificity % (95% CI) | |
| Gallstones present | 0.55 (0.40 to 0.70) | 0.92 (0.88 to 0.95) |
| Sonographic Murphy’s sign | 0.66 (0.57 to 0.77) | 0.95 (0.92 to 0.98) |
| Thickened gallbladder wall | 0.18 (0.6 to 0.29) | 0.98 (0.96 to 1.00) |
| Any positive feature | 0.63 (0.48 to 0.78) | 0.89 (0.84 to 0.93) |