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Table 4 Odds ratio for current smoking according to income status in women

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 1.66 (1.44-1.90)   1.66 (1.44-1.91)
<2 million won 2.34 (2.05-2.66)   2.34 (2.06-2.67)
<1 million won 2.37 (2.04-2.74)   2.38 (2.06-2.76)
Area-level income
1st quartile: 3.13to 5.58 million   1.00 (Reference) 1.00 (Reference)
2nd quartile: 2.69 to 3.12 million   1.11 (0.95-1.30) 0.98 (0.86-1.13)
3rd quartile: 2.21 to 2.68 million   1.19 (1.00-1.42) 0.96 (0.82-1.12)
4th quartile: 1.32 to 2.21 million   1.13 (0.83-1.54) 0.88 (0.66-1.17)
Regional random variance (SE)    0.209 (0.004)
Rural
Household income
3 million won 1.00 (Reference)   1.00 (Reference)
<3 million won 1.26 (1.03-1.54)   1.29 (1.06-1.58)
<2 million won 1.47 (1.22-1.76)   1.52 (1.26-1.82)
<1 million won 1.45 (1.20-1.75)   1.51 (1.25-1.83)
Area-level income
1st quartile: 3.13to 5.58 million   1.00 (Reference) 1.00 (Reference)
2nd quartile: 2.69 to 3.12 million   0.95 (0.68-1.33) 0.86 (0.62-1.19)
3rd quartile: 2.21 to 2.68 million   0.82 (0.61-1.11) 0.67 (0.50-0.90)
4th quartile: 1.32 to 2.21 million   0.69 (0.52-0.93) 0.52 (0.39-0.70)
Regional random variance (SE)    0.323 (0.069)
  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).