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Table 2 General characteristics of bus company employees and general workers

From: Cardiovascular disease risk differences between bus company employees and general workers according to the Korean National Health Insurance Data

  Bus company employees General workers  
n % n % p-value
Total   15,719 100.0 8,033,907 100.0  
Sex Male 15,130 96.3 5,139,814 64.0 < 0.0001
Female 589 3.8 2,894,093 36.0  
Age 15–29 52 0.3 1,242,608 15.5 < 0.0001
30–39 1088 6.9 2,338,147 29.1  
40–49 5656 36.0 2,227,686 27.7  
50–59 7638 48.6 1,668,020 20.8  
> 60 1285 8.2 557,446 6.9  
Income level 25%P 181 1.2 1,805,809 22.5 < 0.0001
50%P 640 4.1 1,852,773 23.1  
75%P 13,072 83.2 2,135,139 26.6  
100%P 1826 11.6 2,240,186 27.9  
Obesitya yes 6410 40.8 2,708,099 33.7 < 0.0001
no 9309 59.2 5,325,808 66.3  
Smoking yes 3756 23.9 4,282,941 53.3 < 0.0001
no 11,963 76.1 3,750,966 46.7  
Heavy drinkingb yes 3104 19.8 1,362,534 17.0 < 0.0001
no 12,615 80.3 6,671,373 83.0  
Lack of exercisec yes 5904 37.6 4,923,386 61.3 < 0.0001
no 9815 62.4 3,110,521 38.7  
  1. aObesity is defined as having a body mass index of above 25 kg/m2
  2. bHeavy drinking is defined as a person who reportedly drink > 7 glasses of alcoholic beverage in a week
  3. cLack of exercise is defined as performing moderate to high-intensity exercises in < 3 times a week