Table 2.

Power to detect the difference between the genotypic distributions in two populations, assuming a sample of 230 from population 1 (cases) and 400 from population 2 (controls).

P1	P2	P1-P2	POWER
0.030	0.010	0.020	0.95
	0.009	0.021	0.97
	0.008	0.022	0.99
	0.007	0.023	0.99
0.050	0.025	0.025	0.77
	0.023	0.027	0.85
	0.021	0.029	0.92
	0.020	0.030	0.94
0.100	0.057	0.043	0.78
	0.055	0.045	0.82
	0.050	0.050	0.91
0.200	0.130	0.070	0.74
	0.120	0.080	0.86
	0.110	0.090	0.94
	0.100	0.100	0.98
0.300	0.200	0.100	0.80
	0.190	0.110	0.88
	0.180	0.120	0.94
0.400	0.280	0.120	0.79
	0.270	0.130	0.84
	0.250	0.150	0.94
0.500	0.360	0.140	0.77
	0.350	0.150	0.84
	0.330	0.170	0.93

Note: P1, the proportion of homozygous mutants in population 1; P2, the proportion of homozygous mutants in population 2.