Range, mean (SD), internal consistency (α), and zero order Pearson correlations of the study variables (n=1181)
| Variable | Range | Mean | SD | α | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|
| *p<0.01. | ||||||||||
| Age | 19–68 | 39.09 | 10.13 | – | – | – | – | – | – | – |
| Job control | 0–100 | 53.47 | 21.22 | 0.90 | 0.03 | – | – | – | – | – |
| Quantitative workload | 6–97 | 44.89 | 16.40 | 0.88 | 0.08 | −0.43* | – | – | – | – |
| Physical demands | 0–100 | 34.94 | 21.09 | 0.88 | 0.00 | −0.15* | 0.47* | – | – | – |
| Supervisor demands | 0–100 | 27.68 | 20.21 | 0.89 | 0.02 | −0.40* | 0.46* | 0.37* | – | – |
| Fatigue | 20–137 | 50.09 | 23.12 | 0.90 | 0.06 | −0.33* | 0.44* | 0.29* | 0.38* | – |
| Job dissatisfaction | 0–100 | 15.97 | 24.79 | 0.87 | −0.01 | −0.32* | 0.50* | 0.38* | 0.45* | 0.49* |