Table 3.
Meta-analysis results of subgroups in the OS group.
| Subgroup | No. of study | HR (95%CI) | Heterogeneity | ||
|---|---|---|---|---|---|
| I2 | P | ||||
| OS | 14 | 1.84 (1.27–2.67) | 80.3% | <0.001 | |
| Country | Germany | 2 | 1.75 (1.08–2.82) | 0.0% | 0.779 |
| China | 10 | 1.85 (1.14–2.99) | 85.0% | <0.001 | |
| Japan | 2 | 2.34 (0.49–11.22) | 39.2% | 0.200 | |
| Type of Cancers | CCRCC | 2 | 3.76 (1.84–7.67) | 0.0% | 0.466 |
| NSCLC | 5 | 1.08 (0.71–1.65) | 63.1% | 0.043 | |
| Sample Number | <100 | 8 | 1.25 (0.73–2.15) | 61.2% | 0.012 |
| >100 | 6 | 2.38 (1.81–3.13) | 31.4% | 0.200 | |
| Analysis Methods | Univariate | 8 | 1.78 (1.16–2.73) | 83.6% | <0.001 |
| Multivariate | 6 | 2.13 (0.83–5.44) | 75.2% | 0.001 | |
CCRCC – clear cell renal cell carcinoma; NSCLC – non-small cell lung cancer.