Table 2.

Sensitivity of ultrasound (US) in all patients.

n=125	US hydronephrosis	US stone	Overall positive finding (hydronephrosis or stone)
ED bedside US evidence	98	11	103
Sensitivity	78.4%	8.8%	82.4%
95% CI	70.2–85.3%	3.8–13.8%	75.6–89.2%

ED, emergency department; CI, confidence interval