Table 6 Summary of epidemiological studies with positive and negative associations between individual and work-related factors, and
poor or decreased Work Ability Index
| Factor | Positive associations | Null associations | Negative associations | ||||||
| Logistic regression | Other analysis | Logistic regression | Other analysis | Logistic regression | Other analysis | ||||
| No | Range OR | No | No | Range OR | No | No | Range OR | No | |
| 1. Demographic factors | |||||||||
| A. Older age | 2 | 1.90–3.57 | 2 | 2 | 0.84–1.00 | 0 | 1 | 0.71 | 0 |
| B. Female | 0 | 0 | 2 | 1.30–1.43 | 0 | 0 | 0 | ||
| C. Low education | 1 | 1.20 | 0 | 1 | 1.09 | 0 | 0 | 0 | |
| D. Low income | 1 | 1.92 | 1 | 1 | 0.98 | 0 | 0 | 0 | |
| E. Other | 2 | 1.56–1.96 | 1 | 1 | 1.12 | 0 | 0 | 0 | |
| 2. Physical condition | |||||||||
| A. Poor cardiorespiratory condition | 0 | 1 | 2 | 1.86–1.94 | 0 | 0 | 0 | ||
| B. Poor musculoskeletal capacity | 3 | 6.39–9.12 | 1 | 0 | 0 | 0 | 0 | ||
| C. Poor mental performance | 0 | 0 | 2 | 1.54–1.75 | 0 | 0 | 0 | ||
| D. Poor balance | 1 | 6.53 | 0 | 2 | 2.40–3.60 | 0 | 0 | 0 | |
| 3. Lifestyle factors | |||||||||
| A. Overweight | 2 | 2.71–7.51 | 2 | 3 | 0.29–1.50 | 0 | 0 | 0 | |
| B. Lack of leisure-time physical activity | 2 | 1.80–7.18 | 2 | 1 | 1.77 | 0 | 0 | 0 | |
| C. Smoking | 0 | 1 | 1 | 1.61 | 1 | 0 | 0 | ||
| D. Other | 1 | 27.63 | 0 | 1 | 0.80 | 0 | 0 | 1 | |
| 4. Work-related psychosocial and organisational factors | |||||||||
| A. High mental work demands | 1 | 4.75 | 4 | 2 | 1.40–1.21 | 0 | 0 | 0 | |
| B. Poor autonomy | 1 | 1.95 | 2 | 1 | 1.40 | 0 | 0 | 0 | |
| C. Other | 1 | 3.60 | 3 | 2 | 0.69–1.58 | 0 | 0 | 1 | |
| 5. Work-related physical factors | |||||||||
| A. High physical demands | 2 | 1.80–2.54 | 2 | 2 | 0.95–2.02 | 1 | 0 | 0 | |
| B. High physical exposure | 0 | 2 | 2 | 1.10–1.55 | 0 | 0 | 0 | ||
-
OR, odds ratio.
