Logistic regression showing that individuals in UKB who either had an EA-PGS in the top decile but scored low on the fluid intelligence test (n =137) were more likely to be rare DD variant carriers. The comparator group included those within the same EA-PGS decile but with a higher fluid intelligence score or recorded qualifications. Data are presented as mean values 95% CI, where solid lines indicate that the P value reached Bonferroni-corrected significance and the dashed lines indicate that it did not. P values were not corrected for multiple testing.