Sample Size Calculations for Differences in Means
Study Design
Continuous (Means)
Binary (Proportions)
Non-Inferiority (Proportions)
Power :
Increments for Power Calculations
Significance :
Mean in Control Group :
SD in Control Group :
Mean in Treatment Group :
SD in Treatment Group :
Allocation Ratio (1:N) :
Proportion in Control Group :
Proportion in Treatment Group :
Allocation Ratio (1:N) :
Proportion :
Level of reduction of effectiveness as being clinically significant :
Cluster Study Design?
Mean Cluster Size
Minimum Cluster Size
Maximum Cluster Size
Cluster Size Range
Interclass Correlation
Plot
Table
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