A simple analysis of a simple crossover trial with a dichotomous outcome measure

Stat Med. 2010 Jan 30;29(2):193-8. doi: 10.1002/sim.3771.

Abstract

For the two-treatment two-period crossover trial with a dichotomous outcome measure a simple and straightforward analysis is proposed: compute the treatment difference for each of the treatment sequences AB and BA, and then average over the sequence groups. The mean difference is used in the statistical test and in the computation of the 95 per cent confidence interval. The method is generalized to the case of a crossover trial including more than two treatments.

MeSH terms

  • Albuterol / administration & dosage
  • Albuterol / therapeutic use
  • Algorithms
  • Analysis of Variance
  • Asthma, Exercise-Induced / drug therapy
  • Bronchodilator Agents / administration & dosage
  • Bronchodilator Agents / therapeutic use
  • Child
  • Confidence Intervals
  • Cross-Over Studies*
  • Epidemiologic Research Design
  • Ethanolamines / administration & dosage
  • Ethanolamines / therapeutic use
  • Formoterol Fumarate
  • Humans
  • Models, Statistical*
  • Probability
  • Randomized Controlled Trials as Topic / methods*
  • Sample Size
  • Treatment Outcome

Substances

  • Bronchodilator Agents
  • Ethanolamines
  • Albuterol
  • Formoterol Fumarate