Figure 4

Crude and PIM2R adjusted mortality of males versus females for each critical care unit. The red vertical line is the overall PIM2R adjusted odds ratio from a cluster-robust model and the black vertical line is the null odds ratio value of one. The overall OR for male relative to female mortality is 0·87 (95% CI, 0·81 to 0·94, P = 0·001). Each dot represents an individual unit. OR < 1 represents higher female mortality in that PICU, OR > 1 represents higher male mortality. The PIM2R adjusted OR ensures that mortality comparison between the two sexes takes into account that the probability to be admitted in PICU depends on the severity of disease on admission. This plot can be viewed in conjunction with Table 4.