Outcome and risk factors of ulcer healing after gastric endoscopic submucosal dissection: A systematic review and meta-analysis

Table 2 Outcome of ulcer healing during different time periods

Different durations	Studies	Patients (n)	OR	95%CI	P value	Heterogeneity
						χ2	df	P value	I2 (%)
Overall	11	3719	2.71	2.45-3.00	0.06	808.11	14	< 0.00001	98
< 8 weeks	7	1286	0.76	0.23-0.46	0.49	188.64	7	< 0.00001	96
≥ 8 weeks	6	2433	6.73	3.82-11.87	< 0.00001	74.58	6	< 0.00001	92

P value of < 0.05 was considered statistically significant. OR: Odds ratio; 95%CI: 95% confidence intervals; df: Degrees of freedom.