Comparison of rectal bleeding (RB) and stool frequency (SF) to endoscopic healing as defined by Mayo endoscopic subscores (MCSe)=0/1
| Symptom score | MCSe | PPV | NPV | Sensitivity | Specificity | |
|---|---|---|---|---|---|---|
| =0/1 | ≥2 | |||||
| RB=0 | 47 | 8 | 85.5% (73.3–96.5) | 70.8% (55.9–83.0) | 77.0% (64.5–86.8) | 81.0% (65.9–91.4) |
| RB>0 | 14 | 34 | ||||
| SF=0 | 38 | 2 | 95.0% (83.1–99.4) | 63.5% (50.4–75.3) | 62.3% (49.0–74.4) | 95.2% (83.8–99.4) |
| SF>0 | 23 | 40 | ||||
| RB+SF=0 | 33 | 2 | 94.3% (80.8–99.3) | 58.8% (46.2–70.6) | 54.1% (40.8–66.9) | 95.2% (83.8–99.4) |
| RB+SF>0 | 28 | 40 | ||||
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.