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Table 3 Multivariate logistic regression results predicting current smoking

From: Associations of psychological capital, demographic and occupational factors with cigarette smoking among Chinese underground coal miners

  Model 1 OR (95% CI) Model 2 OR (95% CI) Model 3 OR (95% CI) Model 4 OR (95% CI)
Age (years)     
 ≤35    1 1
 36–45    1.27 (0.97-1.66) 1.29 (0.99-1.69)
 ≥46    1.26 (0.95-1.69) 1.29 (0.97-1.73)
Marital status     
 Single/Divorced/Widowed/Separated vs. Married/Cohabiting    0.92 (0.71-1.20) 0.95 (0.73-1.24)
Education     
 Junior high school or under vs. Senior high school/Technical secondary school or above    1.53 (1.23-1.89) 1.54 (1.24-1.91)
Job rank     
 Staff miner vs. Head miner    0.83 (0.66-1.04) 0.83 (0.66-1.04)
Occupational category     
 Mining/Tunneling vs. Supporting    0.93 (0.77-1.12) 0.93 (0.77-1.12)
ERI     
 Low    1 1
 Intermediate    1.13 (0.90-1.41) 1.12 (0.90-1.40)
 High    1.11 (0.88-1.40) 1.10 (0.87-1.40)
PPE     
 Low    1 1
 Intermediate    1.39 (1.11-1.75) 1.39 (1.11-1.74)
 High    1.22 (0.97-1.54) 1.21 (0.95-1.53)
PsyCap     
 Low 1   1  
 Intermediate 1.13 (0.91-1.40)   1.12 (0.90-1.40)  
 High 1.01 (0.81-1.25)   1.00 (0.79-1.25)  
Self-efficacy     
 Low   1   1
 Intermediate   1.13 (0.88-1.45)   1.12 (0.87-1.45)
 High   0.97 (0.71-1.31)   0.99 (0.72-1.35)
Hope     
 Low   1   1
 Intermediate   1.20 (0.92-1.55)   1.23 (0.94-1.61)
 High   0.91 (0.65-1.27)   0.90 (0.64-1.27)
Resilience     
 Low   1   1
 Intermediate   1.31 (1.01-1.71)   1.30 (0.99-1.70)
 High   1.61 (1.16-2.23)   1.58 (1.13-2.20)
Optimism     
 Low   1   1
 Intermediate   0.81 (0.63-1.05)   0.79 (0.61-1.03)
 High   0.70 (0.52-0.93)   0.69 (0.51-0.92)
−2 Log likelihood 2705.56 2687.44 2650.21 2631.63
  1. PsyCap, psychological capital; OR, odds ratio; CI, confidence intervals; ERI, effort-reward imbalance; PPE, perceived physical environment.