Table 2.

Diagnostic Performance Results

	PI-FAB						TARGET
	Rad1			Rad2			Rad1			Rad2
	Formula (n/N)	Value	95% CI	Formula (n/N)	Value	95% CI	Formula (n/N)	Value	95% CI	Formula (n/N)	Value	95% CI
Sensitivity	14/21	0.67	0.43–0.85	13/21	0.62	0.38–0.82	14/21	0.67	0.43–0.85	12/21	0.57	0.34–0.78
Specificity	54/66	0.82	0.70–0.90	38/56	0.68	0.54–0.80	52/66	0.79	0.67–0.88	42/56	0.75	0.62–0.86
PPV	14/26	0.54	0.33–0.73	13/31	0.42	0.25–0.61	14/28	0.5	0.31–0.69	12/26	0.46	0.27–0.67
NPV	54/61	0.89	0.78–0.95	38/46	0.83	0.69–0.92	52/59	0.88	0.77–0.95	42/51	0.82	0.69–0.92
Accuracy	68/87	0.78	0.68–0.86	51/77	0.66	0.55–0.77	66/87	0.76	0.65–0.84	54/77	0.7	0.59–0.80
AUC	-	0.74	0.63–0.86	-	0.65	0.53–0.77	-	0.73	0.61–0.84	-	0.66	0.54–0.78
p-value	< .0001	-	-	0.0348	-	-	< .0001	-	-	0.0171	-	-

Abbreviations: AUC, Area Under the Curve; PPV, Positive Predictive Value, NPV, Negative Predictive Value