Table 3.
Multivariable analysis of risk factors associated with tobacco use among Tehran cohort study participants
| Characteristica | Adjusted OR (95%CI) | P-value# |
|---|---|---|
| Age category, year | ||
| 35–44 | Ref | |
| 45–54 | 0.752 (0.636–0.888) | 0.001 |
| 55–64 | 0.784 (0.653–0.942) | 0.009 |
| 65–74 | 0.574 (0.456–0.722) | < 0.001 |
| ≥ 75 | 0.356 (0.250–0.507) | < 0.001 |
| Male sex | 4.316 (3.737–4.984) | < 0.001 |
| Being married | 1.949 (0.806–4.712) | 0.138 |
| Education, year | ||
| Illiterate | Ref | < 0.001 |
| 1–5 | 1.158 (0.784–1.710) | 0.461 |
| 6–12 | 1.389 (0.988–1.954) | 0.059 |
| > 12 | 0.980 (0.687–1.398) | 0.913 |
| Body mass index, kg/m2 | ||
| < 20 | Ref | 0.014 |
| 20–24.9 | 0.690 (0.484–0.983) | 0.04 |
| 25–29.9 | 0.584 (0.412–0.827) | 0.002 |
| 30–34.9 | 0.603 (0.419–0.869) | 0.007 |
| ≥ 35 | 0.682 (0.447–1.039) | 0.075 |
| Physical activity | ||
| Low | Ref | 0.738 |
| Intermediate | 1.077 (0.891–1.302) | 0.444 |
| High | 1.075 (0.870–1.329) | 0.504 |
| Opium consumption | 5.557 (4.390–7.035) | < 0.001 |
| Alcohol consumption | 4.737 (3.955–5.673) | < 0.001 |
| Hypertension | 0.774 (0.649–0.925) | 0.005 |
| Diabetes mellitus | 0.903 (0.737–1.106) | 0.323 |
| Dyslipidemia | 0.903 (0.773–1.055) | 0.199 |
| Chronic kidney disease | 0.801 (0.342 -1.877) | 0.61 |
| Chronic lung disease | 0.867 (0.588–1.278) | 0.472 |
| Coronary artery disease | 0.896 (0.701–1.145) | 0.382 |
CI Confidence interval, OR Odds ratio
# P < 0.05 was considered significant
aAll variables are included in the multivariable logistic regression model for calculating the adjusted odds ratios