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Table 2 Duty-specific risks of cardiac events in firefighters

From: Extreme sacrifice: sudden cardiac death in the US Fire Service

Type of duty Relative risk of CHD death[19] Relative risk of cardiac event resulting in early retirement[18] Relative risk of CHD death[4]
Fire suppression (OR (95% CI)) 64.1 (74–556) 51 (12–223) 53 (40–72)
Physical training (OR (95% CI)) 7.6 (1.8–31.3) 0.68 (0.2–2.7) 5.2 (3.6–7.5)
Alarm response (OR (95% CI)) 5.6 (1.1–28.8) 6.4 (2.5–17) 7.4 (5.1–11)
Alarm return (OR (95% CI)) 3.4 (0.8–14.7) 0.37 (0.07–1.8) 5.8 (4.1–8.1)
EMS and other emergencies (OR (95% CI)) 1.7 (0.5–5.9) 0.75 (0.3–1.8) 1.3 (0.9–2.0)
Firehouse and other non-fire emergencies 1.0 1.0 1.0
  1. CHD, coronary heart disease; OR, odds ratio; EMS, emergency medical service; CI, confidence interval.