TABLE 1.

Comparison of Test Characteristics Between Modalities

Test Characteristic	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Positive LR	Negative LR	AUC
Unenhanced MRI	85.9	93.8	83.8	94.7	13.9	0.15	0.93
95% CI	76.2–92.7	89.7–96.7	73.8–91.1	90.7–97.3	8.1–23.7	0.09–0.26	0.89–0.97
Pediatric radiologists
Mean	87.2	98.1	94.4	95.4	45.8	0.13	0.93
95% CI	72.6–95.7	93.3–99.8	81.3–99.3	89.5–98.5	11.5–181.6	0.06–0.3	0.87–0.99
Range	76.9–100	97.1–100	90.9–100	91.9–100	26.9-∞	0–0.24	0.86–1
Abdominal radiologists
Mean	84.6	89.5	75	94	8.1	0.17	0.93
95% CI	69.5–94.1	82–94.7	59.7–86.8	87.4–97.8	4.6–14.4	0.08–0.36	0.88–0.97
Range	76.9–100	85.7–94.3	71.4–83.3	91.1–100	6.7–13.5	0–0.26	0.90–0.95
Contrast-enhanced MRI	93.6	94.3	85.9	97.5	16.4	0.07	0.94
95% CI	85.6–97.9	90.2–97	76.6–92.5	94.4–99.2	9.4–28.5	0.03–0.16	0.91–0.97
Pediatric radiologists
Mean	87.2	97.1	91.9	95.3	30.5	0.13	0.94
95% CI	72.6–95.7	91.9–99.4	78.1–98.3	89.4–98.5	9.9–93.7	0.06–0.3	0.89–0.99
Range	69.2–100	94.3–100	86–100	89–100	16.2–00	0–0.31	0.89–1
Abdominal radiologists
Mean	100	91.4	81.3	100	11.7	0	0.96
95% CI	90–100	84.4–96	67.4–91.1	96.2–100	6.3–21.8	0–0	0.94–0.99
Range	100–100	88.6–94.3	76–87	100–100	8.8–11.7	0–0	0.95–0.98
Contrast-enhanced CT	93.6	94.3	85.9	97.5	16.4	0.07	0.97
95% CI	85.6–97.9	90.2–97	76.6–92.5	94.4–99.2	9.4–28.5	0.03–0.16	0.94–0.99
Pediatric radiologists
Mean	92.3	96.2	90	97.1	24.2	0.08	0.96
95% CI	79.1–98.4	90.5–99	76.3–97.2	91.8–99.4	9.2–63.6	0.03–0.24	0.92–1
Range	94.6–100	91.4–100	80–100	94.4–100	10.8-∞	0–0.16	0.94–1
Abdominal radiologists
Mean	94.9	92.4	82.2	98	12.5	0.06	0.98
95% CI	82.7–99.4	85.5–96.7	68–92	92.9–99.8	6.4–24.3	0.01–0.21	0.95–1
Range	84.6–100	88.6–94.3	73–86.7	93.9–100	7.4–17.5	0–0.17	0.94–1

Note—PPV = positive predictive value, NPV = negative predictive value, LR = likelihood ratio.