Table 5– Random-effects Cox proportional hazard# regression of plateau pressure <30 cmH2O in patients with acute lung injury
Observations nMortality HR (95% CI)p-value
Unadjusted17370.88 (0.75–1.03)0.111
Adjusted17370.84 (0.72–0.99)0.038

  • HR: hazard ratio. #: shared gamma frailty model; : for region, sepsis admission source (emergency department, ward or intensive care unit), drotrecogin alfa administered within 24 h, vasopressor use (no, yes or not applicable), number of organ failures and site quarter.