Table 3.

Principal component analysis correlation table.

	Component matrix
	Components sample, n = 435 with PRS			Components sample, n = 903 without PRS
	1	2	3	1	2	3
Impulsivity	0.396	0.613	0.375	0.400	0.685	0.273
Venturesomeness	0.260	0.573	−0.427	0.230	0.647	−0.441
Empathy	0.288	−0.386	0.541	0.291	−0.311	0.569
PRS	−0.009	0.356	0.044	–	–	–
Inattention	0.115	0.046	0.685	0.113	0.094	0.719
Hyperactivity	0.377	0.454	0.212	0.322	0.416	0.267
Neuroticism	0.608	−0.282	0.217	0.655	−0.262	0.136
Extraversion	0.822	0.114	−0.006	0.810	0.136	−0.015
Openness	0.749	−0.140	−0.201	0.767	−0.159	−0.185
Agreeableness	0.798	−0.087	−0.169	0.818	−0.062	−0.121
Conscientiousness	0.625	−0.323	−0.308	0.667	−0.365	−0.266

Table 3 shows the loading of the three non-rotated component solution of the PCA. The first three left columns belong to the solution with the smaller but genotyped sample; therefore, it includes the polygenic risk score (PRS). There is no qualitative change in component loading for all variables except PRS.