Intelligence quotient explains some of the  difference in heart disease between people  of high and low socio-economic status.
Tofield
Andros
A
D006331:Heart Diseases / Q000401:mortality* / Q000523:psychology; D006801:Humans; D007360:Intelligence; D008889:Military Personnel / Q000523:psychology* / Q000706:statistics & numerical data; D012959:Socioeconomic Factors; D014481:United States / Q000453:epidemiology