A recent discussion in this journal illustrates some recurrentmisunderstandings about the role of covariates in randomized controlledtrials (rcts). This letter aims at clarifying this role and at pointingout a pitfall in spss repeated measures anova. We hope that our commentarywill contribute to a further improvement in the use of advanced statisticsin neuropsychology.
|Journal||Journal of the International Neuropsychological Society|
|Publication status||Published - 1 Jan 2007|