01-15-2015 04:13 PM
I am trying to calculate sample size for a study using paired data. My groups are such that one discordant pair will always be 0. When I enter this into proc power (see below), I receive the error that this is an invalid input. I expect this is due to the fact that my reference proportion is zero. Is there another way to get this sample size calculation?
power=.8 .85 .9 .90