Issues in reporting epidemiological studies: No data are given to support generalisation

doi:10.1136/bmj.330.7483.146-b

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David F Blackburn, assistant professor (d.blackburn@usask.ca)

College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada S7N 5C9

EDITOR—The article by Pocock et al outlined deficiencies in epidemiological research.1 Undoubtedly, the deficiencies they reported will be generalised to all observational studies, even though they specifically excluded papers examining treatments or patients with diseases. Even the accompanying editorial revisits the hormone …