A modified poisson regression approach to prospective studies with binary data

Am J Epidemiol. 2004 Apr 1;159(7):702-6. doi: 10.1093/aje/kwh090.


Relative risk is usually the parameter of interest in epidemiologic and medical studies. In this paper, the author proposes a modified Poisson regression approach (i.e., Poisson regression with a robust error variance) to estimate this effect measure directly. A simple 2-by-2 table is used to justify the validity of this approach. Results from a limited simulation study indicate that this approach is very reliable even with total sample sizes as small as 100. The method is illustrated with two data sets.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Clinical Trials as Topic / statistics & numerical data*
  • Data Interpretation, Statistical
  • Humans
  • Poisson Distribution*
  • Prospective Studies
  • Regression Analysis*
  • Reproducibility of Results
  • Risk*