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sample size calculation for paired proportions when one discordant pair is 0

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sample size calculation for paired proportions when one discordant pair is 0

Hello!

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?

Thanks!

proc power;

PAIREDFREQ

test=mcnemar

alpha=.05

power=.8 .85 .9 .90

npairs=.

discpropdiff=.007

refproportion=0

method=miettinen

dist=normal

;

run;

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