Variables | No. of studies | Heterogeneity test | Effect size | Model | Conclusion | |||
---|---|---|---|---|---|---|---|---|
I2 (%) | p value | OR/SMD | 95%CI | p value | ||||
Distant Metastasis | 14 | 0.0 | 0.903 | 4.39 | 2.77–6.95 |  < 0.001 | Fixed | Significant |
Clinical stage | 7 | 0.0 | 0.635 | 0.22 | 2.25–9.55 |  < 0.001 | Fixed | Significant |
MVD | 3 | 78.0 | 0.011 | 3.33 | 1.57–5.10 |  < 0.001 | Random | Significant |
Tumor location | 4 | 0.0 | 0.828 | 0.799 | 0.39–1.63 | 0.538 | Fixed | Not significant |
Gender | 12 | 46.2 | 0.040 | 0.91 | 0.53–1.55 | 0.726 | Random | Not significant |
Local recurrence | 3 | 0.0 | 0.522 | 1.43 | 0.69–2.98 | 0.328 | Fixed | Not significant |
Age | 4 | 5.7 | 0.290 | 0.71 | 0.37–1.34 | 0.364 | Fixed | Not significant |
Chemotherapy response | 8 | 36.8 | 0.135 | 0.96 | 0.63–1.45 | 0.832 | Fixed | Not significant |