Investigation of under-ascertainment in epidemiological studies based in general practice.

@article{Sethi1999InvestigationOU,
  title={Investigation of under-ascertainment in epidemiological studies based in general practice.},
  author={D. P. S. Sethi and Jeremy G Wheeler and Laura C. Rodrigues and Susan S Fox and Paul J Roderick},
  journal={International journal of epidemiology},
  year={1999},
  volume={28 1},
  pages={106-12}
}
BACKGROUND One of the aims of the Study of Infectious Intestinal Disease (IID) in England is to estimate the incidence of IID presenting to general practice. This sub-study aims to estimate and correct the degree of under-ascertainment in the national study. METHODS Cases of presumed IID which presented to general practice in the national study had been ascertained by their GP. In 26 general practices, cases with computerized diagnoses suggestive of IID were identified retrospectively. Cases… CONTINUE READING

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