Commentary: Case-control studies of screening should carry a health warning.


George Knox published an unequivocal condemnation of misuses of case-control methods for evaluating screening. 1 Noel Weiss countered some of Knox's criticisms, arguing that carefully conducted and cautiously interpreted case-control studies may be the only option in circumstances where other evidence is unavailable. 2 Whilst Weiss's arguments are valid… (More)


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