Figure 4
From: Arterial hyperoxia and mortality in critically ill patients: a systematic review and meta-analysis
Forest plot showing individual and pooled odds ratios for mortality of studies on patients with stroke. Odds ratios >1 (right side of the plot) indicate an association between hyperoxia and higher mortality. Heterogeneity was Q (1) = 0.04, P = 0.844, I 2 = 0. The size of the boxes is inversely proportional to the size of the result study variance, so that more precise studies have larger boxes. ES, effect size; CI, confidence interval; W, weight; Sig., P value.