Mean daily exposure, exposure variability in the job, and results of linear regression analyses of measured on task based individual mean job exposures according to number of days with data collection per subject for car mechanics
| Exposure variables | Data collection days/subject | Direct measurements | Regression results | |||
|---|---|---|---|---|---|---|
| Mean | sS2 | ρ2 | α | β | ||
| sS2, variance between measured individual mean job exposures; ρ2, squared correlation coefficient; α, intercept; β, slope. | ||||||
| *Regression results influenced by one outlier. When he was excluded from the TEM and from the regression analyses, the ρ2 values for 1, 2, 3, and 4 days were: 0.30, 0.30, 0.21, 0.09. | ||||||
| % time >90°* | 1 | 4.7 | 6.1 | 0.22 | 2.09 | 0.53 |
| 2 | 4.7 | 5.4 | 0.11 | 2.34 | 0.47 | |
| 3 | 4.7 | 4.7 | 0.06 | 2.54 | 0.44 | |
| 4 | 4.7 | 4.0 | 0.00 | 4.10 | 0.12 | |
| % time >90° at least 5 s | 1 | 3.5 | 4.2 | 0.19 | 1.69 | 0.49 |
| 2 | 3.4 | 3.4 | 0.08 | 1.96 | 0.38 | |
| 3 | 3.4 | 3.0 | 0.03 | 2.30 | 0.32 | |
| 4 | 3.4 | 2.3 | 0.00 | 3.42 | 0.00 | |