Table 2.
Stratification analysis for the meta-analysis with overall survival (OS) in patients with cancers.
| Subgroup | No. of studies | No. of patients | Pooled HR (95% CI) | Heterogeneity | |
|---|---|---|---|---|---|
| I 2 (%) | p value | ||||
| Cancer type | |||||
| Prostate cancer | 2 | 416 | 2.88 (1.89-4.39) | 0.0 | 0.345 |
| Ovarian cancer | 4 | 264 | 2.70 (1.82-4.02) | 0.0 | 0.720 |
| Others | 7 | 894 | 2.29 (1.86-2.82) | 0.0 | 0.928 |
| Cutoff value | |||||
| Median | 9 | 1302 | 2.45 (2.01-2.98) | 0.0 | 0.894 |
| Others | 4 | 272 | 2.46 (1.76-3.43) | 0.0 | 0.622 |
| Sample size | |||||
| >100 | 5 | 1067 | 2.31 (1.85-2.90) | 0.0 | 0.959 |
| <100 | 8 | 507 | 2.64 (2.04-3.41) | 0.0 | 0.766 |