Find statistical considerations for a cross-over study
where the outcome is a measurement

Significance Level -- sided (default= .05, 2 sided).

Within patient standard deviation, or Standard deviation of the difference between the two values for the same patient,if known.

Enter two of the following three values and remaining value will be calculated.

  1. Power, usually .8 or .9.
  2. Total number of patients.
  3. Minimal detectable difference in means

Last Updated Tue Oct 24 22:56:39 EDT 1995
David A. Schoenfeld, Ph.D.,
With support from the Massachusetts General Hospital Mallinckrodt General Clinical Research Center, Research Resources Division, National Institutes of Health, General Clinical Research Center Program.