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Table 3 Logistic regression model evaluating factors associated with ever smoking

From: Demographics and medical disorders associated with smoking: a population-based study

Variables Unadjusted Adjusted
OR (95% CI) Pvalue OR (95% CI) Pvalue
Sex
 Women 1     1    
 Men 3.86 (3.66, 4.07) < 0.001 4.18 (3.96, 4.42) < 0.001
Age (y)
  > 74 1     1    
 40–54 2.74 (2.50, 3.02) < 0.001 3.12 (2.79, 3.49) < 0.001
 55–64 2.75 (2.48, 3.05) < 0.001 3.16 (2.82, 3.54) < 0.001
 65–74 1.03 (0.92, 1.16) 0.592 1.09 (0.96, 1.23) 0.176
Insured Category
 Category I 1     1    
 Category II 1.16 (1.09, 1.24) < 0.001 1.31 (1.20, 1.43) < 0.001
 Category III 0.75 (0.70, 0.80) < 0.001 1.18 (1.05, 1.31) 0.004
 Category V 1.85 (1.45, 2.37) < 0.001 2.09 (1.56, 2.80) < 0.001
 Category VI 0.96 (0.89, 1.04) 0.313 1.25 (1.13, 1.38) < 0.001
Insured monthly salary (NTD)
  ≤ 17,280 1     1    
 17,280–22,800 0.87 (0.78, 0.97) 0.012 0.90 (0.78, 1.04) 0.160
 22,801–36,300 1.07 (0.95, 1.20) 0.249 1.11 (0.96, 1.28) 0.149
  > 36,301 1.12 (0.99, 1.26) 0.070 0.98 (0.85, 1.13) 0.800
Urbanization of residence area
 I 1     1    
 II, III 1.11 (1.04, 1.18) 0.002 1.09 (1.01, 1.17) 0.019
 IV, V 0.96 (0.89, 1.04) 0.284 1.05 (0.95, 1.15) 0.344
 VI, VII 0.93 (0.84, 1.01) 0.095 1.03 (0.92, 1.15) 0.609
Comorbidity
COPD
 No 1     1    
 Yes 0.89 (0.79, 0.99) 0.041 1.15 (1.02, 1.31) 0.029
Hypertension
 No 1     1    
 Yes 0.71 (0.67, 0.76) < 0.001 0.95 (0.89, 1.02) 0.140
Stroke
 No 1     1    
 Yes 0.71 (0.64, 0.79) < 0.001 1.02 (0.90, 1.16) 0.730
CAD
 No 1     1    
 Yes 0.71 (0.65, 0.78) < 0.001 0.99 (0.88, 1.13) 0.922
Adult preventive care
 No 1     1    
 Yes 0.90 (0.85, 0.95) < 0.001 1.05 (0.99, 1.11) 0.116