Temperament would be noted to affect how social , loud vs quiet, calm vs agitated, etc. But is is subjective.
Looking at some physiologic correlates, I would wonder about hypertension:
https://www.researchgate.net/profile/Kumari_Nishi/publication/275025995_Study_on_the_Incidence_of_Hypertension_and_Migraine_in_ABO_Blood_Groups/links/552f45d90cf2acd38cbbf2f9/Study-on-the-Incidence-of-Hypertension-and-Migraine-in-ABO-Blood-Groups.pdf
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