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Table 3 Odds ratio for current smoking according to income status in men

From: Household and area income levels are associated with smoking status in the Korean adult population

  Model 1* Model 2 Model 3
Urban    
Household income    
3 million won 1.00 (Reference)   1.00 (Reference)
<3 million won 1.23 (1.18-1.29)   1.23 (1.17-1.28)
<2 million won 1.41 (1.35-1.48)   1.40 (1.34-1.47)
<1 million won 1.46 (1.37-1.55)   1.44 (1.36-1.53)
Area-level income (won)    
1st quartile: 3.13to 5.58 million   1.00 (Reference) 1.00 (Reference)
2nd quartile: 2.69 to 3.12 million   1.11 (0.91-1.21) 1.11 (1.04-1.19)
3rd quartile: 2.21 to 2.68 million   1.13 (0.90-1.18) 1.14 (1.06-1.24)
4th quartile: 1.32 to 2.21 million   1.07 (0.81-1.06) 1.17 (1.02-1.33)
Regional random variance (SE)    0.062 (0.011)
Rural    
Household income    
3 million won 1.00 (Reference)   1.00 (Reference)
<3 million won 1.17 (1.10-1.25)   1.17 (1.10-1.25)
<2 million won 1.31 (1.23-1.38)   1.31 (1.24-1.39)
<1 million won 1.33 (1.25-1.41)   1.33 (1.25-1.42)
Area-level income    
1st quartile: 3.13to 5.58 million   1.00 (Reference) 1.00 (Reference)
2nd quartile: 2.69 to 3.12 million   1.05 (0.92-1.20) 1.06 (0.94-1.20)
3rd quartile: 2.21 to 2.68 million   1.00 (0.89-1.13) 1.07 (0.96-1.19)
4th quartile: 1.32 to 2.21 million   0.85 (0.76-0.95) 0.99 (0.89-1.10)
Regional random variance (SE)    0.033 (0.005)
  1. Data are presented as odds ratio (95% confidence interval).
  2. *Adjusted for individual-level characteristics (age, alcohol intake, BMI, stress perception, depressive mood perception, self-rated health status, family type, marital status).