Comparison of rectal bleeding (RB) and stool frequency (SF) to endoscopic healing as defined by Mayo Clinic endoscopic subscores (MCSe)=0
| Symptom score | MCSe | PPV | NPV | Sensitivity | Specificity | |
|---|---|---|---|---|---|---|
| =0 | ≥1 | |||||
| RB=0 | 33 | 22 | 60.0% (45.9–73.0) | 89.6% (77.3–96.5) | 86.8% (71.9–95.6) | 66.2% (53.4–77.4) |
| RB>0 | 5 | 43 | ||||
| SF=0 | 29 | 11 | 72.5% (56.1–85.4) | 85.7% (74.6–93.3) | 76.3% (59.8–88.6) | 83.1% (71.7–91.2) |
| SF>0 | 9 | 54 | ||||
| RB+SF=0 | 26 | 9 | 74.3% (56.7–87.5) | 82.4% (71.2–90.5) | 68.4% (51.3–82.5) | 86.2% (75.3–93.5) |
| RB+SF>0 | 12 | 56 | ||||
No. of patients are provided for each score; PPV, NPV, sensitivity and specificity values are % (95% CI).
NPV, negative predictive value; PPV, positive predictive value.