title: A random effects model for ordinal responses from a crossover trial.
authors.forename: S
authors.initials: S
authors.lastname: Senn
mesh_terms: D001249:Asthma / Q000188:drug therapy*; D002986:Clinical Trials as Topic / Q000706:statistics & numerical data*; D003627:Data Interpretation, Statistical; D006801:Humans; D015233:Models, Statistical; D009330:Nebulizers and Vaporizers; D016017:Odds Ratio