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Table 1 General and job characteristics of study subjects

From: Factors related to heart rate variability among firefighters

Variables Number Percent
Age (year)   
 20-29 58 9.0
 30-39 234 36.3
 40-49 272 42.2
 50-59 81 12.6
Department   
 Non-administrative job   
  Fire extinguish 336 52.1
  Rescue 62 9.6
  Emergency medical service 111 17.2
 Administrative job   
  Administration 136 21.1
Shift work   
  No 120 18.6
  Yes 525 81.4
Smoking   
  No 514 79.7
  Yes 131 20.3
Alcohol   
  No 231 35.8
  Yes 414 64.2
Marital status   
  Unmarried 123 19.1
  Married 522 80.9
Exercise (times/week)   
   < 3 342 53.0
   ≥ 3 303 47.0
BMI   
   < 25 386 59.8
   ≥ 25 259 40.2