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Sensitivity of either hematuria or ultrasound by stone size.
| Computed tomography proven stone size | <6 mm | ≥6 mm |
|---|---|---|
| Total patients | 65 | 60 |
| Patients with microscopic hematuria | 46 | 50 |
| Sensitivity | 70.0% | 83.0% |
| 95% confidence interval | 58.0–81.0% | 71.0–91.0% |
| Total number of patients with either microscopic hematuria or positive emergency department (ED) bedside US | 58 | 60 |
| Combined sensitivity of hematuria or positive ED bedside US | 89.0% | 100% |
| 95% confidence interval | 78.0–95.0% | 93.0–100% |
