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Editorial
Survival methods and competing risk analyses are inappropriate for ICU outcome studies because they may falsely favor treatments that prolong survival without preventing hospital mortality; binary analysis like logistic regression should be used instead.
The preferred analysis for studies of mortality among patients treated in an intensive care unit should compare the proportions of patients who died during hospitalization. Studies that look for prognostic covariates should use logistic regression. Survival methods, such as the proportional hazards model, or methods based on competing risk analysis are not appropriate because prolonged survival among patients that die during their hospitalization does not benefit the patient and, therefore, should not be measured in the statistical analysis.
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David Schoenfeld (2005) studied this question.
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