Preoperative Anemia or Low Hemoglobin Predicts Poor Prognosis in Gastric Cancer Patients: A Meta-Analysis
Table 3
Metaregression analysis exploring sources of heterogeneity.
Coefficient
Standard error
Adjusted
Overall survival
Sample size
-0.00008
0.00005
0.177
6.65%
Cut-off value
-0.10590
0.13030
0.432
20.55%
Study quality
0.01575
0.06565
0.814
-23.34%
Study analysis type
-0.13012
0.10638
0.24
-2.74%
Tumor stage
-0.04170
0.04517
0.371
-16.14%
Country
-0.11614
0.16179
0.484
-2.02%
Disease-free survival
Sample size
-0.00017
0.00049
0.74
-31.61%
Cut-off value
0.47822
0.63443
0.506
-20.93%
Study quality
-0.09480
0.26281
0.737
-27.41%
Study analysis type
-0.60512
0.45102
0.251
17.41%
Tumor stage
-0.69009
0.62650
0.333
1.19%
Note: the dependent variable is the lnHR for overall survival or disease-free survival from each study; weights have been assigned according to the estimated variance of the lnHR.
