Results simulation study (Nsim = 10.000) into the power to detect a genetic variant explaining .1% of the variance with 5 differently constructed phenotypic instruments (an complete scale with 27 items, a subtest with the 9 middle items, a subtest with 9 items selected to cover the entire continuum

Note. #hits denotes the number of p-values<α = .05, α = .01, or α = .001, respectively. Ratio denotes the % of hits that the 4 subscales pick up, compared to the full instrument including all 27 items.