Table 2.
Univariate analysis of delayed bleeding.
| Factor | Present (n = 21) | Absent (n = 140) | P value |
|---|---|---|---|
| Age (yr, mean ± SD) | 70.2 ± 11.6 | 72.8 ± 8.3 | 0.432 |
| Sex (male/female) | 15/6 | 101/39 | 0.847 |
| Morphology (I/IIa/IIc, IIa + IIc, III) | 1/8/12 | 5/89/46 | 0.081 |
| Histological type (intestinal/diffuse/adenoma) | 18/1/2 | 103/3/34 | 0.267 |
| Depth (M/SM,MP) | 21/0 | 124/16 | 0.095 |
| Ulcer findings (presence/absence) | 9/12 | 12/128 | <0.001* |
| Location (U/M/L) | 0/10/11 | 22/64/54 | 0.124 |
| Location (U/ML) | 0/21 | 22/118 | 0.036* |
| Circumference (AW/GC/LC/PW) | 6/1/11/3 | 14/44/56/26 | 0.014* |
| Size of resected lesion (mm, mean ± SD) | 38.9 ± 10.8 | 35.0 ± 11.9 | 0.17 |
| Procedure duration (min, mean ± SD) | 88.2 ± 33.6 | 80.4 ± 51.9 | 0.164 |
| Number of times hemostatic forceps used (mean ± SD) | 5.6 ± 3.9 | 4.3 ± 4.9 | 0.162 |
| Anticoagulants/platelets (used/not used) | 4/17 | 29/111 | 0.562 |
| Post-ESD ulcer (extended LC/not extended LC) | 17/4 | 72/68 | 0.009* |
SD: standard deviation; M: mucosa; SM: submucosa; U: upper third; M: middle third; L: lower third; AW: anterior wall; GC: greater curve; LC: lesser curve; PW: posterior wall; ESD: endoscopic submucosal dissection.
*Significantly different.