Table 1. Work-related characteristics of female firefighters (n = 1,766).

Characteristic		Value
Age in 2000 (years)		24.04 ± 5.92
	≤ 20	486 (27.5)
	20–24	705 (39.9)
	25–29	274 (15.5)
	30–34	181 (10.2)
	35–39	91 (5.2)
	40–44	29 (1.6)
Age at first employment (years)		25.57 ± 3.20
	< 20	42 (2.5)
	20–24	799 (45.2)
	25–29	758 (42.9)
	≥ 30	167 (9.5)
Duration of employment (years)		7.15 ± 5.82
	< 10	1,344 (76.1)
	≥ 10	422 (23.9)
Worked in fire suppression service, n (%)
	No	1,035 (58.6)
	Yes	731 (41.4)
Worked in emergency medical service
	No	816 (46.2)
	Yes	950 (53.8)
Worked at the office
	None	1,203 (68.1)
	Yes	563 (31.9)
Worked in the communications section
	No	1,564 (88.6)
	Yes	202 (11.4)
Employment status at the end of study
	On duty	1,648 (93.3)
	Retired or dead	118 (6.7)

Values are expressed as mean ± standard deviation or number (%).