Table 4.
P values of meta-regressions.
| Covariate | Meta-analysis of MVA HRs | |
|---|---|---|
| OS | DFS/RFS | |
| Anatomic structure | 0.015 | 0.043 |
| Tumor site | ||
| Esophagus | 0.118 | 0.003 |
| Stomach | 0.016 | 0.015 |
| Colorectal | 0.094 | 0.018 |
| Liver | 0.752 | 0.002 |
| Pancreas | DR | DR |
| Tumor stage | ||
| NMS | 0.983 | 0.277 |
| Mix | 0.097 | DR |
| MS | DR | 0.316 |
| Ethnicity | 0.328 | 0.637 |
| Cut-off value | 0.120 | 0.160 |
| Beyond cut-off | 0.981 | 0.720 |
| Treatment | 0.772 | 0.579 |
MVA: multivariate analysis; HR: hazard ratio; OS: overall survival; DFS: disease-free survival; RFS: recurrence-free survival; NMS: nonmetastatic stage; MS: metastatic stage; DR: dropped because of collinearity.