Table 1. Empirical -levels for supra-multiplicativity test (SMT)^a.

	Number of SNPs
b	10	20	30	40	50
0.05	0.044*	0.045*	0.046*	0.042*	0.045*
0.005	0.0043*	0.0043*	0.0045*	0.0047	0.0049
0.0005	0.00048	0.00043	0.00043	0.00046	0.00045

^aUnder a model with multiplicative SNP effects, without interaction effects.

^bNominal significance level.

^*indicates significant deviation from the nominal level.