Table 1. Associations of the risk factors with BMI.
| Risk factor | Category * | Effect size | P-value |
|---|---|---|---|
| Smoking | Never smoker | Reference group | |
| Previous smoker | + 0.06 kg/m2 | 0.648 | |
| Smoking occasionally | + 0.27 kg/m2 | 0.341 | |
| Smoking daily | - 1.06 kg/m2 | 6.49 x 10−18 | |
| Physical activity | Active | Reference group | |
| Inactive | + 0.79 kg/m2 | 8.49 x 10−13 | |
| Alcohol consumption | No or moderate | Reference group | |
| High | - 0.36 kg/m2 | 9.00 x 10−4 | |
| Diet quality | Healthy | Reference group | |
| Poor | - 0.25 kg/m2 | 0.024 | |
| Socioeconomic class | Working, ≥ 4 years of education | Reference group | |
| Working, 1–3 years of education | + 0.00 kg/m2 | 0.99 | |
| Working, no education | + 0.21 kg/m2 | 0.24 | |
| Not working, ≥ 1 year of education | + 0.18 kg/m2 | 0.40 | |
| Not working, no education | + 0.01 kg/m2 | 0.98 | |
| Mental health | High | Reference group | |
| Low | - 0.06 kg/m2 | 0.62 | |
| Quality of sleep | Good | Reference group | |
| Poor | + 0.15 kg/m2 | 0.28 |
* The categories are described in the “Risk Factors” section of Materials and methods.
Effect sizes and p-values for each category are reported relative to the Reference group.