This Genetic Association Study (GAS) Power Calculator is a simple interface that can be used to
compute statistical power for large one-stage genetic association studies.
The underlying method is derived from the CaTS power calculator for two-stage association studies (2006).

Cases/Controls = 1.000

Cases

Controls

Significance Level

Prevalence

Disease Allele Frequency

Genotype Relative Risk

Statistical Power vs.

Cases

Controls

Genotype A/A [with frequency 0.250]

Genotype A/B [with frequency 0.500]

Genotype B/B [with frequency 0.250]