Figure 4
From: The effect of telemedicine in critically ill patients: systematic review and meta-analysis
Subgroup analyses of effect of telemedicine on ICU mortality based on study quality (higher quality in upper panel and lower quality in lower panel). Pooled risk ratios were calculated by using a random-effects model. Weight refers to the contribution of each study to each subgroup's estimate of treatment effect. The interaction P value for the difference between risk ratios is 0.53.