Biopsy in emergency gastroscopy does not increase the risk of rebleeding in patients with Forrest I acute nonvariceal upper gastrointestinal bleeding combined with suspected malignant gastric ulcer: a multicenter retrospective cohort study

Table 4 Logistic regression analysis (biopsy group vs. no-biopsy group) in the cohort before and after propensity score matching

	Before Matching Rebleeding			After Matching Rebleeding
	Odds ratio	95% CI	P value	Odds ratio	95% CI	P value
Unadjusted	1.265	0.975–1.641	0.077	0.902	0.644–1.263	0.548
Adjusted for all covariates^a	1.028	0.754–1.400	0.862	0.834	0.573–1.214	0.343
Multiple imputation^b	1.040	0.772–1.400	0.798

^aAll variables in Table 2 were included as covariates for the model with hospital rebleeding
^bLogistic regression was performed including all of the patients before matching after multiple imputation for missing data using multivariate normal distribution

ISSN: 1471-230X