Correlation of Serum Levels of Endostatin with Tumor Stage in Gastric Cancer: A Systematic Review and Meta-Analysis

Table 2

Metaregression analyses of potential source of heterogeneity.

Heterogeneity factors	Coefficient	SE			95% CI
				(Adjusted)	LL	UL
Year	0.033	0.081	0.42	0.985	−0.164	0.232
Sample	0.009	0.006	1.66	0.386	−0.004	0.023
Country	−0.283	0.167	−1.69	0.365	−0.691	0.126
Detecting method	0.288	0.533	0.54	0.969	−1.016	1.593

Notes. SE: standard error; LL: lower limit; UL: upper limit.