Immortal Time Bias in Pharmacoepidemiology - American Journal of ... 3 Dec 2007 ... Immortal time is a span of cohort follow-up during which, because of exposure definition, the outcome under study could not occur. Bias from ...
Immortal time bias in observational studies of drug effects - Suissa ... Immortal time bias in observational studies of drug effects†. Samy Suissa PhD1,2 ,*. Article first published online: 25 JAN 2007. DOI: 10.1002/pds.1357.
