Sensitivity, specificity, positive predictive values (PPV), and negative predictive values (NPV) for Sostre scores for observer A and B, with a sphincter of Oddi basal pressure >40 mm Hg defined as abnormal
| Sensitivity | Specificity | PPV | NPV | |
|---|---|---|---|---|
| 95% confidence limits in parentheses. | ||||
| Observer A | ||||
| Score ≥6 | 38% (10–74) | 90% (68–98) | 60% (17–93) | 79% (57–92) |
| Score ≥5 | 38% (10–74) | 76% (52–91) | 38% (10–74) | 76% (52–91) |
| Score ≥4 | 50% (17–83) | 76% (52–91) | 44% (15–77) | 80% (56–93) |
| Observer B | ||||
| Score ≥6 | 25% (4–64) | 86% (63–96) | 40% (7–83) | 75% (53–89) |
| Score ≥5 | 38% (10–74) | 62% (39–81) | 27% (7–61) | 72% (46–89) |
| Score ≥4 | 38% (10–74) | 52% (30–74) | 23% (6–54) | 69% (41–88) |