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Case-control Study Slides - Hair Dye use and Risk of Acute...

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1 Hair Dye use and Risk of Acute Adult Leukemia Rauscher GH, Shore D. Sandler DP. Am J Epidemiol 2004;160:19-25 Who were the cases? How did they identify the cases? Who were the controls? How were the controls selected? How many cases and how many controls were included in the study? Hair Dye use and Risk of Acute Adult Leukemia Rauscher GH, Shore D. Sandler DP. Am J Epidemiol 2004;160:19-25 Who were the cases? incident cases of adult acute leukemia aged 15-79 enrolled Jan 1 1986-June 1989 (or Sept 1990?) in US and Canada How did they identify the cases? Participants (or not?) in a clinical trial of a multi-institutional cooperative cancer treatment group Who were the controls? community members How were the controls selected? Random digit dialing - two stage sampling-same telephone area codes and first 3 digits as cases. Frequency matched by 10 year age group, sex, race and region of residence How many cases and how many controls were included in the study?
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