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Table 5 Factors associated with BMI change for the long-term work group*

From: Occupational Factors Associated with Changes in the Body Mass Index of Korean Male Manual Workers

  Variables B SE β t p-value
Age   −0.01 0.02 −0.10 −0.84 0.403
Education High school or lower (Ref)      
  College or higher −0.66 0.22 −0.31 −3.03 0.003
Marital status Single or divorced (Ref)      
  Married 0.49 0.23 0.20 2.13 0.035
Smoking Never or formerly smoked (Ref)      
  Started or resumed smoking −1.57 0.78 −0.18 −2.02 0.046
  Quit smoking 0.81 0.41 0.17 1.96 0.053
  Continued smoking −0.20 0.19 −0.10 −1.02 0.309
Alcohol drinking§ Non-drinking (Ref)      
  No change 0.05 0.34 0.02 0.15 0.884
  Decrease in drinking 0.07 0.30 0.03 0.24 0.810
  Increase in drinking −0.51 0.29 −0.22 −1.73 0.086
Regular exercise Not performed (Ref)      
  Stopped performing 0.67 0.32 0.20 2.10 0.038
  Began performing 0.24 0.24 0.09 1.00 0.321
  Continued performing −0.06 0.40 −0.01 −0.15 0.880
Coffee drinking   0.09 0.06 0.15 1.59 0.115
Amount of sleep < 7 hours (Ref)      
  ≥ 7 hours 0.03 0.18 0.01 0.17 0.865
Working hours ≤ 9 hours (Ref)      
  > 9 hours, < 12 hours 0.07 0.24 0.04 0.31 0.761
  ≥ 12 hours 0.20 0.31 0.08 0.64 0.524
Shift work No shift work (Ref)      
  Two shifts −0.13 0.33 −0.04 −0.40 0.693
  Three shifts 0.58 0.27 0.24 2.16 0.033
Sitting time 0-24% (Ref)      
  25-49% −0.29 0.24 −0.13 −1.18 0.242
  50-74% 0.10 0.28 0.04 0.35 0.729
  75-100% 0.53 0.35 0.19 1.54 0.126
Job stress Job demand 0.01 0.20 0.00 0.03 0.978
  Insufficient job control −0.08 0.22 −0.04 −0.38 0.705
  Inadequate social support 0.44 0.23 0.19 1.93 0.056
  Job insecurity 0.28 0.22 0.11 1.28 0.204
  Organizational injustice 0.05 0.24 0.02 0.21 0.831
  Lack of reward 0.30 0.21 0.14 1.40 0.163
  Poor occupational climate 0.10 0.19 0.05 0.54 0.587
  1. Dependent variable: The change in body mass indices between 2012 and 2013.
  2. R2 = 0.329.
  3. * Experience of more than 5 years working at the present post.
  4. † Standard error.
  5. ‡ The change in smoking status between 2012 and 2013.
  6. § The change in the weekly amount of alcohol drinking between 2012 and 2013.
  7. The change in regular exercise performance between 2012 and 2013. Those performing high- or moderate-intensity exercise were regarded as getting regular exercise.