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Table 2 Demographic characteristics by major category of the Korean Standard Classification of Occupations among female workers

From: Prevalence of the Metabolic Syndrome among Korean Workers by Occupational Group: Fifth Korean National Health and Nutrition Examination Survey (KNHANES) 2010

  Managers Professional and related workers Clerks Service workers Sales workers Skilled agricultural, forestry and fishery workers Craft and related trades workers Equipment, machine operation and assembling workers Elementary workers Total p-value
Age (yr)* 54.1 (3.9) 34.2 (0.6) 33.7 (0.7) 43.2 (1.0) 43.2 (1.0) 57.4 (1.5) 49.1 (2.9) 41.8 (2.4) 51.7 (1.0) 45.4 (0.6) < 0.001
Education            < 0.001
  ≤ Elementary school 0.0 (0.0) 0.6 (0.3) 0.3 (0.3) 21.7 (3.3) 18.4 (2.6) 67.2 (4.7) 30.4 (9.7) 16.5 (7.4) 39.8 (3.0) 22.3 (1.9)  
  Middle school 18.2 (15.1) 0.6 (0.4) 2.2 (1.0) 18.3 (2.9) 13.3 (2.5) 15.5 (4.5) 34.5 (8.4) 17.2 (7.6) 18.5 (3.4) 11.6 (1.1)  
  High school 18.4 (12.9) 17.1 (2.5) 50.1 (3.9) 47.3 (3.6) 47.6 (3.7) 15.0 (4.2) 31.8 (7.6) 60.4 (10.3) 34.7 (3.7) 34.5 (1.7)  
  ≥ University 63.3 (18.0) 81.7 (2.5) 47.4 (4.1) 12.6 (2.7) 20.7 (3.0) 2.3 (1.4) 3.3 (2.3) 5.8 (4.1) 6.9 (1.8) 31.5 (1.8)  
Household income            < 0.001
  Low 0.0 (0.0) 4.0 (1.4) 2.6 (1.2) 10.0 (2.3) 12.1 (2.3) 35.7 (4.9) 30.6 (9.4) 0.0 (0.0) 25.1 (2.9) 14.2 (1.3)  
  Low-middle 1.2 (1.2) 17.2 (2.7) 20.7 (3.8) 31.1 (3.6) 23.0 (3.8) 25.6 (3.2) 23.6 (6.1) 23.9 (7.7) 36.9 (3.4) 25.4 (1.5)  
  Middle-high 14.6 (13.3) 37.4 (3.3) 36.8 (4.2) 30.7 (3.8) 35.4 (3.8) 18.0 (3.3) 28.2 (7.6) 45.2 (10.9) 22.6 (2.5) 30.8 (1.5)  
  High 84.2 (13.4) 41.4 (3.4) 40.0 (3.8) 28.2 (3.3) 29.6 (3.7) 20.7 (3.2) 17.6 (6.5) 30.9 (9.5) 15.4 (2.6) 29.6 (1.6)  
High-risk drinking            < 0.001
  Never 77.4 (15.6) 39.6 (3.5) 31.7 (3.9) 35.9 (3.9) 43.6 (3.8) 57.0 (5.4) 18.5 (6.7) 37.1 (11.3) 42.7 (5.0) 39.8 (1.7)  
  Once a month 22.6 (15.6) 45.0 (3.7) 52.9 (4.3) 43.5 (4.0) 37.8 (4.2) 38.4 (4.4) 58.6 (9.3) 59.8 (11.7) 35.9 (3.9) 43.6 (4.6)  
  Once a weak 0.0 (0.0) 15.4 (3.2) 14.7 (3.0) 13.6 (2.6) 17.2 (3.3) 4.0 (2.2) 19.5 (8.5) 3.1 (3.1) 14.3 (3.3) 13.8 (1.3)  
  Everyday 0.0 (0.0) 0.0 (0.0) 0.7 (0.7) 7.0 (2.0) 1.3 (1.3) 0.6 (0.6) 3.4 (2.6) 0.0 (0.0) 7.1 (3.0) 2.7 (0.6)  
Smoking status            0.015
  Non-smoker 100.0 (0.0) 88.5 (1.9) 86.3 (2.7) 86.0 (3.1) 83.4 (3.0) 96.4 (1.7) 91.8 (5.6) 96.7 (3.3) 83.0 (3.2) 87.4 (1.2)  
  Ex-smoker 0.0 (0.0) 7.5 (1.6) 7.9 (2.2) 4.9 (1.7) 9.5 (2.4) 2.3 (1.4) 8.0 (5.6) 0.0 (0.0) 5.4 (1.7) 6.3 (0.8)  
  Current smoker 0.0 (0.0) 4.0 (1.1) 5.8 (1.8) 9.2 (2.9) 7.1 (2.2) 1.3 (0.8) 0.1 (0.1) 3.3 (3.3) 11.6 (3.1) 6.3 (0.9)  
Vigorous physical  activity            0.007
  None 55.8 (18.7) 74.1 (3.1) 70.2 (3.7) 70.1 (3.7) 69.5 (3.8) 76.1 (4.1) 86.3 (5.4) 61.5 (8.8) 75.0 (3.2) 72.9 (1.4)  
  < 5 days per week 44.2 (18.7) 21.8 (2.9) 26.2 (3.6) 20.4 (3.6) 23.7 (3.3) 11.4 (2.7) 6.5 (3.6) 23.9 (8.4) 16.2 (2.4) 19.8 (1.2)  
  ≥ 5 days per week 0.0 (0.0) 4.1 (1.3) 3.6 (1.4) 9.5 (2.3) 6.8 (2.0) 12.5 (3.3) 7.2 (4.3) 14.6 (5.6) 8.8 (2.0) 7.3 (0.8)  
Work hours            < 0.001
  ≤ 40 hours per week 80.4 (13.9) 57.0 (3.5) 52.4 (4.2) 33.7 (4.0) 48.9 (4.0) 50.9 (4.0) 29.4 (7.3) 35.9 (9.9) 64.5 (3.6) 51.2 (1.6)  
  > 40 hours per week 19.6 (13.9) 43.0 (3.5) 47.6 (4.2) 66.3 (4.0) 51.1 (4.0) 49.1 (4.0) 70.6 (7.3) 64.1 (9.9) 35.5 (3.6) 48.8 (1.6)  
Work schedule pattern            <0.001
  Day 93.8 (5.4) 74.8 (3.2) 94.3 (2.0) 70.2 (3.7) 77.7 (3.4) 99.0 (0.7) 93.0 (4.6) 74.2 (9.6) 85.8 (2.7) 82.7 (1.5)  
  Night/overnight 5.1 (5.1) 18.9 (3.0) 3.2 (1.5) 24.5 (3.4) 15.6 (2.9) 0.0 4.6 (2.6) 6.1 (3.8) 12.0 (2.6) 12.9 (1.3)  
  Shift 1.1 (1.2) 3.8 (1.5) 1.7 (1.3) 2.2 (0.9) 3.7 (1.7) 0.3 (0.3) 2.4 (2.4) 8.1 (6.1) 1.2 (0.6) 2.4 (0.5)  
  Others 0.0 2.5 (1.0) 0.7 (0.5) 3.1 (1.2) 3.0 (1.4) 0.7 (0.6) 0.0 11.6 (9.0) 1.0 (0.5) 2.0 (0.4)  
BMI category            0.009
  Normal/underweight 82.8 (11.7) 82.9 (2.5) 79.7 (3.2) 72.2 (3.2) 68.5 (4.0) 66.8 (4.4) 69.4 (8.0) 70.3 (9.6) 70.9 (2.6) 74.2 (1.3)  
  Overweight 17.2 (11.7) 14.5 (2.2) 15.0 (2.6) 22.5 (3.0) 27.6 (4.0) 26.4 (3.3) 30.5 (8.0) 17.3 (7.8) 24.4 (2.7) 21.2 (1.1)  
  Obese 0.0 (0.0) 2.6 (1.2) 5.2 (1.9) 5.3 (1.8) 3.9 (1.5) 6.8 (1.9) 0.1 (0.1) 12.4 (7.0) 4.7 (1.3) 4.5 (0.7)  
  1. *Estimated mean (standard error).