Table 1. Non-centrality value and the associated power (presented in parentheses) for models used in the simulation studies.

	Frequency of Allele a	Effect of Allele a
K	p	Recessive	Additive	Dominant
0.01	0.1	—	4.6780 (0.2597)	14.4110 (0.8387)
	0.3	2.8697 (0.1329)	9.7282 (0.6225)	18.5977 (0.9339)
	0.4	6.9507 (0.4323)	—	—
0.1	0.1	—	5.7000 (0.3374)	17.6383 (0.9182)
	0.3	3.4771 (0.1730)	11.7847 (0.7343)	22.5123 (0.9737)
	0.4	8.4233 (0.5379)	—	—

The relative genotype risks are for recessive models; for dominant models; and for additive models.