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Table 1 Socio-demographic and work-related characteristics of 980 male subway drivers

From: The association between psychiatric disorders and work-related problems among subway drivers in Korea

Characteristics Classification N (total = 980) %
Age, year 20-29 24 2.4
  30-39 193 19.7
  40-49 640 65.3
  ≥ 50 123 12.6
Education High school 178 18.2
  Junior college 308 31.4
  Above college 494 50.4
Marital status Unmarried 122 12.2
  Married 837 85.4
  Divorced/separated/bereaved 23 2.3
Family income, US dollar/month < 2,000 5 0.5
2000-2999 114 11.6
  3000-3999 495 50.5
  4000-4999 221 22.6
  ≥ 5000 145 14.8
Years of driving < 1 40 4.1
  1-4 56 5.7
  5-9 193 19.7
  10-19 575 58.7
  20-29 76 7.8
  ≥ 30 40 4.1
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