Table 2.
Subgroup analysis of PD-L1 and OS and PFS in EC.
| Subgroup | No. of studies | OR (95%CI) | p | Effects model | Heterogeneity | |
|---|---|---|---|---|---|---|
| I2(%) | P | |||||
| Overall survival | ||||||
| Total | 4 | 1.20 (0.41–3.52) | 0.737 | REM | 52.8 | 0.098 |
| Sample size | ||||||
| ≤ 120 | 2 | 1.86 (0.38–9.09) | 0.443 | REM | 69.2 | 0.071 |
| >120 | 2 | 0.59 (0.17–2.10) | 0.418 | FEM | 0 | 0.687 |
| Geographic region | ||||||
| Asian | 3 | 1.35 (0.32–5.61) | 0.682 | REM | 61.9 | 0.072 |
| Non-Asian | 1 | 0.76 (0.18–3.21) | 0.709 | – | – | – |
| Progression-free survival | ||||||
| Total | 2 | 1.12 (0.50–2.54) | 0.778 | REM | 55.6 | 0.080 |
| Sample size | ||||||
| ≤ 120 | 1 | 2.01 (0.80–5.04) | 0.137 | – | – | – |
| >120 | 3 | 0.86 (0.29–2.57) | 0.794 | REM | 62.2 | 0.071 |
| Geographic region | ||||||
| Asian | 2 | 0.67 (0.09–5.11) | 0.702 | REM | 80.6 | 0.023 |
| Non-Asian | 2 | 1.58 (0.79–3.16) | 0.193 | FEM | 0 | 0.440 |