From: Prophylactic cranial irradiation in small cell lung cancer: a systematic review and meta-analysis
Subgroups | N studies | Pooled HR | 95% CI | P value (Heterogeneity between subgroups) |
---|---|---|---|---|
Brain imaging after initial CRT | 4 | 0.94 | 0.74–1.18 | 0.0005 |
No brain imaging after initial CRT | 3 | 0.70 | 0.57–0.85 | |
Limited stage | 5 | 0.82 | 0.71–0.94 | 0.67 |
Extensive stage | 6 | 0.76 | 0.55–1.04 | |
Any response to initial CRT | 3 | 0.85 | 0.73–0.99 | 0.76 |
Complete response to initial CRT | 4 | 0.80 | 0.52–1.22 |