Risk factors for moderate to significant mental workload by univariate and multivariate logistic regression analyses
| Univariate analysis OR (95% CI) | P value | Multivariate analysis OR (95% CI) | P value | |
| Age ≥30 years | 3.03 (1.90 to 4.83) | <0.001 | 2.42 (1.22 to 4.80) | 0.012 |
| Female sex | 1.01 (0.68 to 1.50) | 0.968 | – | |
| Tertiary sector | 8.33 (3.91 to 17.72) | <0.001 | 7.89 (3.59 to 17.31) | <0.001 |
| Administrative sector | 90.21 (38.64 to 210.59) | <0.001 | 87.57 (35.22 to 217.79) | <0.001 |
| Seniority in the company (>36 months) | 1.97 (1.24 to 3.14) | 0.004 | 0.95 (0.48 to 1.86) | 0.871 |
| Size of the company (>12 workers) | 2.48 (1.59 to 3.89) | <0.001 | 0.98 (0.52 to 1.84) | 0.945 |
| Hypertension | 1.59 (0.96 to 2.61) | 0.070 | 1.06 (0.53 to 2.13) | 0.856 |
| Diabetes mellitus | 0.12 (0.02 to 0.92) | 0.042 | 0.18 (0.02 to 1.89) | 0.151 |
| Hyperlipidaemia | 1.24 (0.83 to 1.85) | 0.299 | – | |
| Hyperuricaemia | 1.55 (0.80 to 3.03) | 0.198 | – | |
| Smoking habit | 0.52 (0.34 to 0.79) | 0.002 | 0.47 (0.26 to 0.85) | 0.012 |
| Alcohol consumption | 1.50 (0.99 to 2.24) | 0.052 | 2.08 (1.16 to 3.73) | 0.014 |
| Overweight/obesity | 0.77 (0.52 to 1.15) | 0.197 | – | |
| Regular physical activity | 0.56 (0.38 to 0.84) | 0.005 | 0.59 (0.34 to 1.05) | 0.073 |