Practical limitations of epidemiologic methods.

  title={Practical limitations of epidemiologic methods.},
  author={Abraham M Lilienfeld},
  journal={Environmental Health Perspectives},
  pages={3 - 8}
Epidemiologic methods can be categorized into demographic studies of mortality and morbidity and observational studies that are either retrospective or prospective. Some of the limitations of demographic studies are illustrated by a review of one specific mortality study showing possible relationship of nuclear fallout to leukemia. Problems of accuracy of diagnosis or causes of death on death certificates, estimates of population, migration from areas of study, and the issue of "ecological… CONTINUE READING

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