Analysis of Delayed Bleeding after Endoscopic Submucosal Dissection for Gastric Epithelial Neoplasms

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.