Figure 1From: Prophylactic cranial irradiation in small cell lung cancer: a systematic review of the literature with meta-analysisResults of the meta-analysis of the studies evaluating the role of PCI on time to relapse in the brain assessing brain metastases incidence : HR : 0.48 (95% CI : 0.39-0.60) NB: the centre of the lozenge gives the combined HR of the meta-analysis and its extremities the 95% confidence interval.Back to article page