Wright, F; Green, Jane; Canoy, Dexter; Cairns, Benjamin J; Balkwill, Angela; Beral, Valerie
BACKGROUND Electronic linkage to routine administrative datasets, such as the Hospital Episode Statistics (HES) in England, is increasingly used in medical research. Relatively little is known about the reliability of HES diagnostic information for epidemiological studies. In the United Kingdom (UK), general practitioners hold comprehensive records for individuals relating to their primary, secondary and tertiary care. For a random sample of participants in a large UK cohort, we compared...[Show more]
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