Table 6 Univariate and multivariate analysis of risk factors for bleeding during and after colorectal endoscopic mucosal resection (EMR)
| Â | Risk factor for immediate EMR bleeding | Risk factor for post EMR bleeding | ||||||
|---|---|---|---|---|---|---|---|---|
Variables | Odds ratio | 95% CI | P value | Odds ratio | 95% CI | P value | ||
Univariate analysis | ||||||||
 Age, >75 y | 0.48 | 0.09 | 2.48 | 0.48 | 2.38 | 0.64 | 8.79 | 0.20 |
 Sex, male | 3.05 | 0.39 | 13.5 | 0.15 | 0.51 | 0.06 | 4.16 | 1.00 |
 Anticoagulant agents | 1.07 | 0.20 | 5.56 | 1.00 | 2.27 | 0.61 | 8.53 | 0.25 |
 Antiplatelet agents | 0.77 | 0.15 | 3.99 | 0.67 | 0.58 | 0.14 | 2.39 | 0.43 |
 Multiple agents | 0.84 | 0.10 | 7.20 | 1.00 | 1.54 | 0.30 | 7.73 | 0.64 |
 Heparin replacement | 1.07 | 0.21 | 5.56 | 1.00 | 0.79 | 0.16 | 3.90 | 1.00 |
 Size of polyps, >10 mm | 5.57 | 1.27 | 24.5 | 0.024 | 2.11 | 0.56 | 7.90 | 0.27 |
 Number of polyps, > 2 | 0.23 | 0.03 | 1.93 | 0.26 | 2.74 | 0.74 | 10.2 | 0.17 |
 Histological classification, 0-Ip | 3.81 | 0.74 | 19.4 | 0.14 | 1.21 | 0.34 | 4.34 | 1.00 |
 Operator of trainees | 4.69 | 0.56 | 39.1 | 0.15 | 0.95 | 0.26 | 3.49 | 1.00 |
 Injection of epinephrine | 3.16 | 0.62 | 16.2 | 0.28 | 2.46 | 0.61 | 9.88 | 0.33 |
Multivariate analysis | ||||||||
 Size of polyps, >10 mm | 12.1 | 2.00 | 74.0 | 0.001 |  |  |  |  |