Endgames Statistical question

Crossover trials

BMJ 2009; 338 doi: https://doi.org/10.1136/bmj.b1028 (Published 19 March 2009) Cite this as: BMJ 2009;338:b1028
  1. John Fletcher, clinical epidemiologist
  1. 1BMJ, London WC1H 9JR
  1. jfletcher{at}bmj.com

    Which of the following statements apply to crossover clinical trials?

    • a) They are not subject to confounding by age, sex, or most personal characteristics

    • b) Randomisation is not possible

    • c) They are useful in studies using mortality as the endpoint

    • d) They …

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