Firefighters and on-duty deaths from coronary heart disease: a case control study

Table 3 Relative risk of CHD^† for various job duties adjusted for the estimated proportion of time per year spent in each professional duty.

Type of Duty			Estimated Odds Ratio for each Activity relative to Non-Emergency Activities ^††
	Actual CHD Deaths (N = 52) % n)	Expected* CHD Deaths (N = 52) %(n)	OR^@ (95% CI^$)	p Value **
Fire Suppression	36 (19)	2 (1)	64.1 (7.4–556)	<0.001
Training	17 (9)	8 (4)	7.6 (1.8–31.3)	0.006
Alarm Response	10 (5)	6 (3)	5.6 (1.1–28.8)	0.042
Alarm Return	10 (5)	10 (5)	3.4 (0.8–14.7)	0.12
EMS^¶ or Other Non-Fire Emergency	12 (6)	23 (12)	1.7 (0.5–5.9)	0.52
Fire House and Other Non-emergency activities	15 (8)	52 (27)	1.0	_____

* Expected counts adjusted by yearly Estimated Incident and Response Times, Yearly Frequencies, and assume all activities are of equal risk. ** Fisher's Exact Test. †† Odds Ratios for Observed Counts versus Expected Counts for Each Activity relative to Non-emergency activity Observed and Expected. ^†See Table 1; ^¶@$ See Table 2.

ISSN: 1476-069X