Table 2. The performance of the RF with and without age as a covariate in determining the PA platelet response.

Random Forests (RF)–SNPs without age incorporated as a covariate				RF—SNPs with age incorporated as a covariate
#Iterations	Number of trees (ntree)	% Variance all (p) SNPs	% Variance k SNPs	% Variance all (p) SNPs	% Variance k SNPs
1	500	-0.16	11.85	0.17	13.95
2	1000	-0.5	14.29	-0.69	14.46
3	2000	-0.06	16.86	0.15	18.54
4	3000	0.33	15.92	0.12	16.36