Table 1.
Mean, variation between individuals and variation within individuals for work ability, self-rated health, working conditions, health behaviours and BMI across seven waves of a longitudinal study among 14 159 workers
| Mean (SD) |
Between-individual variation (SD) | Within-individual variation (SD) | % Within-individual variance* | |
| Work ability and health | ||||
| Work ability (0–10) | 7.93 (1.56) | 1.14 | 1.03 | 45% |
| Self-rated health (1–5) | 3.62 (0.87) | 0.75 | 0.45 | 27% |
| Working conditions | ||||
| Psychological job demands (1–5) | 3.15 (0.78) | 0.67 | 0.38 | 25% |
| Emotional job demands (1–5) | 2.44 (0.84) | 0.74 | 0.41 | 24% |
| Autonomy (1–5) | 2.21 (0.71) | 0.63 | 0.33 | 22% |
| Social support (1–5) | 2.43 (0.78) | 0.64 | 0.44 | 32% |
| Physical workload (1–5) | 1.82 (0.90) | 0.84 | 0.29 | 11% |
| Health behaviours and BMI | ||||
| Moderate physical activity (0–7) | 4.31 (2.13) | 1.72 | 1.20 | 33% |
| Vigorous physical activity (0–7) | 2.47 (2.00) | 1.54 | 1.28 | 41% |
| Smoking (% yes) | 19% | 0.35 | 0.14 | 14% |
| BMI (kg/m2) | 26.92 (4.45) | 4.23 | 1.24 | 8% |
*% Within-individual variance is the percentage of the total variance attributable to variance within-individuals.
BMI, body mass index.