The sensitivity, specificity, positive predictive value, and negative predictive value of RUS for detecting VUR by VCUG
| Age group | n (M/F) | RUS suggestive of VUR | VUR on VCUG | VUR in patients with abnormal RUS | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|---|---|
| PPV, positive predictive value; NPV, negative predictive value. | ||||||||
| 0–2 mth | 71 (44/27) | 15 | 11 | 3 | 27% | 80% | 20% | 86% |
| 2–24 mth | 122 (19/103) | 16 | 19 | 4 | 21% | 88% | 25% | 86% |
| 2–5 y | 62 (0/62) | 3 | 15 | 1 | 6% | 96% | 33% | 76% |
| Overall | 255 (63/192) | 34 | 45 | 8 | 17.7% | 87.6% | 23.5% | 83.2% |