Investigating the effect of nonparticipation using a population-based case-control study on myocardial infarction.

@article{Ramos2004InvestigatingTE,
  title={Investigating the effect of nonparticipation using a population-based case-control study on myocardial infarction.},
  author={Elisabete Ramos and Carla Lopes and H. E. Ambassador Cristi{\'a}n Barros},
  journal={Annals of epidemiology},
  year={2004},
  volume={14 6},
  pages={
          437-41
        }
}
PURPOSE To characterize non-participants in a population-based study on cardiovascular diseases and investigate the effect of non-participation on risk estimates for myocardial infarction. METHODS Using random digit dialing we obtained full information for 1054 adults (60.8% female), while 345 eligible individuals (72.5% female) declined the invitation to participate, but answered a limited set of questions by telephone. Risk of myocardial infarction was estimated using 474 cases (19.4… CONTINUE READING
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