When is simple too simple? Immortal time bias in critical care.
Linde-Zwirble
Walter
W
D015982:Bias; D035843:Biomedical Research; D003422:Critical Care; D016638:Critical Illness / Q000401:mortality; D003693:Delirium / Q000453:epidemiology; D006801:Humans; D007362:Intensive Care Units