NCI DCP Power Program: Frequency Matched Study with Equal Numbers of Cases and Controls and Strata Specific Exposures [ref: Gail]

6-2. Frequency Matched Study with Equal Numbers of Cases and Controls and Strata Specific Exposures [ref: Gail]

Select What to Calculate, then enter the remaining Parameter Values. Optionally, select a parameter to Fast-Forward, and specify number of and increment per iteration. Press the Default button to use the original default parameter values, or the Undo button to clear modifications made to current defaults. Press the Calculate button for results.

Number of Strata:

What to Calculate:	Fast Forward:	Specify Parameters:
		Prevalence of exposure in the controls:
		Exposure parameter in the diseased cases expressed as: Exposure Value:
		Number of diseased cases:
		Power level:
		One-sided alpha level:
		Use alternate formula when P0 < .1 ?(details)NY
	none	Fast Forward Options: # Iterations: Size of Increment: