Figure 3
From: Identifying unusual performance in Australian and New Zealand intensive care units from 2000 to 2010
Funnel plot of log-SMRs versus effective sample size for each ICU from Stage 2 of the analysis. The funnels correspond to 95% classical limits (dashed lines) not adjusted for multiple testing, the Bonferroni limits controlling the FWER at 5% (dotted lines), and limits controlling the FDR at 5% (solid lines). Potentially unusual ICUs are marked with their random identifying numbers. The effective sample size is the estimated variance of the log-SMR as a fraction of the total variance. Legend: SMR: standardised mortality ratio. FDR: false discovery rate. FWER: family-wise error rate.