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 6 Multivariate linear regression analysis (biopsy group vs. no-biopsy group) in the cohort before and after propensity score matching

	Before matching Hospitalization costs			After matching Hospitalization costs
	B	95% CI	P value	B	95% CI	P value
Unadjusted	0.447	− 0.178 to 1.072	0.161	− 0.817	− 1.616 to − 0.017	0.045
Adjusted for all covariates^a	− 1.476	− 1.629 to − 1.324	< 0.001	− 1.424	− 1.584 to − 1.263	< 0.001
Multiple imputation^b	− 1.481	− 1.602 to − 1.361	< 0.001

^aAll variables in Table 2 included as covariates. For model with Hospitalization costs
^bMultivariate linear regression was performed for all the patients before matching after multiple imputation for missing data using multivariate normal distribution

ISSN: 1471-230X