Table 3.

Test characteristics of study physician clinical examination (CE) alone and clinical examination plus emergency ultrasound (CE+EUS) of those lesions that were clinically evident and not clinically evident

	N	Lesions requiring drainage per outcome	Sensitivity, % (95% CI)	Specificity, % (95% CI)	PPV (95 % CI)	NPV (95% CI)
Clinically evident (n=228)
Study/treating MD CE+	156	144	94.7 (90.2 to 97.9)	84.2 (74.7 to 91.7)	92.3 (87.3 to 96.3)	88.9 (80.2 to 95.3)
Study/treating MD CE−	72	8
Study MD CE+EUS +	147	134	93.1 (88.4 to 96.6)	81.4 (70.9 to 90.0)	91.2 (85.8 to 95.4)	85.1 (76.1 to 92.5)
Study MD CE+EUS −	67	10
Study MD CE+EUS uncertain	14	8
Difference			−1.7 (−3.4 to 0)	−2.8 (−9.7 to 3.2)	−1.2 (−3.8 to 1.7)	−3.8 (−7.2 to 0.2)
Not clinically evident (n=159)
Study MD CE+	40	19	43.7 (0.0 to 85.3)	42.0 (0.0 to 79.5)	42.9 (0.0 to 66.7)	45.6 (0.0 to 71.4)
Study MD CE−	34	16
Study MD CE uncertain	85	52
Study MD CE+EUS +	83	59	77.6 (58.2 to 89.7)	61.3 (45.6 to 71.2)	71.1 (62.5 to 79.5)	69.1 (56.5 to 79.1)
Study MD CE+EUS −	55	17
Study MD CE+EUS uncertain	21	11
Difference			33.9 (1.2 to 66.6)	19.3 (−13.8 to 52.4)	28.2 (8.8 to 47.6)	23.2 (0.6 to 45.8)