Hi,

I'm planning a 2-period cross-over clinical study with measures taken at
baseline, end of first period, end of wash-out and end of second period.
Measures of the primary variable are taken semi-continuously via an
electronic device that each patient carries on himself. These devices are
subject to malfunction, in which case the absence of data would lead to the
exclusion from the analysis of an otherwise valid patient. I was wondering
whether multiple imputation could be of help in this case, but I have some
doubts linked to the crossover design of the study.

Does anyone have previous experience of application of multiple imputation
methods to crossover studies? any suggestion would be appreciated.

Thanks in advance

Roberto Ferrara



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