Endgames
Statistical question
Outcome measures in case-control studies
BMJ 2009; 338 doi: https://doi.org/10.1136/bmj.b1575 (Published 22 April 2009) Cite this as: BMJ 2009;338:b1575
- John Fletcher, clinical epidemiologist
- 1BMJ, London WC1H 9JR
- jfletcher{at}bmj.com
A case-control study was carried out using general practice records to investigate whether a low fibre diet is a risk factor for irritable bowel disease. One hundred new cases of irritable bowel disease and 200 randomly selected controls were found through a search of practice records, and the patients were then approached to be interviewed. Which of the following, if any, could be estimated …
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