Figure 4From: A systematic review of therapeutic hypothermia for adult patients following traumatic brain injuryFunnel plots to investigate evidence of bias. (4.1) Death. (a) Standard funnel plot. (b) Contour-enhanced funnel plot. (4.2) Poor outcome. (a) Standard funnel plot. (b) Contour-enhanced funnel plot. (4.3) Pneumonia; RR, relative risk (equivalently, risk ratio). (a) Standard funnel plot. (b) Contour-enhanced funnel plot.Back to article page