Severity of Myocardial Ischemia Is Related to Career Length Rather Than Age Among Professional Firefighters.

Career length, not age, moderately correlates with IHD ischemic severity among firefighters. Career length is a proxy measure of occupational exposures which contributes to IHD. When assessing IHD risk in firefighters, health practitioners should consider incorporating the occupational exposure history (i.e., career length) in addition to age when providing risk reduction services.