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I have noticed a change in the output of the summary function for the sample size/power calculation in version 4.0.0 compared with 3.5.1, where the efficacy boundary (treatment effect scale) for two-sided tests is not shown any more. The output for one-sided tests is not affected. I was wondering if this change is intended or not, as it was helpful to show the efficacy boundary for the study design.
Sample size calculation for a continuous endpoint
Fixed sample analysis, significance level 5% (two-sided).
The results were calculated for a two-sample t-test, H0: mu(1) - mu(2) = 0,
H1: effect = 10, standard deviation = 24, power 80%.
Stage Fixed
Efficacy boundary (z-value scale) 1.960
Number of subjects 182.8
Two-sided local significance level 0.0500
I have noticed a change in the output of the
summary
function for the sample size/power calculation in version 4.0.0 compared with 3.5.1, where the efficacy boundary (treatment effect scale) for two-sided tests is not shown any more. The output for one-sided tests is not affected. I was wondering if this change is intended or not, as it was helpful to show the efficacy boundary for the study design.rpact 4.0.0:
rpact 3.5.1:
Thank you!
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