Fig. 2
Estimated risks associated with Middle East respiratory syndrome (MERS) by published study. Panels show the risk estimates by study outcome: (a) risk of death, (b) risk of admission to the intensive care unit (ICU) and (c) risk of requiring mechanical ventilation. CFR represents the case fatality risk. The size of the diamonds reflects the sample size, and the whiskers extend to the lower and upper values of the 95% confidence interval (CI). The diamond without fill represents the pooled estimate using the inverse variance of the risk of death. I2 measures the extent of the heterogeneity, representing the proportion of variance in a meta-analysis that is attributable to study heterogeneity. Khalid et al., 2015a is [16] while Khalid et al., 2015b is [19]