95% CI
	Sensitivity	Specificity	Negative predictive value	Positive predictive value	Negative likelihood ratio	Positive likelihood ratio
Clinically important stone in the ultrasound only cohort (n = 1733)
TP: 81	98.8%	28.2%	99.8%	6.4%	0.04	1.4
TN: 466	(92.5–99.9%)	(26.1–30.5%)	(98.6–100%)	(5.1–7.9%)	(0.01–0.30)	(1.32–1.43)
FP: 1185
FN: 1
Clinically important outcomes, all admitted patients up to day 7
TP: 276	97.5%	16.5%	98.3%	11.8%	0.15	1.2
TN: 407	(94.8–98.9%)	(15.0–18.0%)	(96.4–99.3%)	(10.5–13.2%)	(0.07–0.31)	(1.14–1.20)
FP: 2056
FN: 7

TP = true positive; TN = true negative; FP = false positive; FN = false negative.