Table 2.
Fixed-effects model parameters and variance components.
| Fixed-effects terms/variance components | Null model, parameter estimatesa |
Full model, parameter estimatesa |
||
| Estimate | SE | Estimate | SE | |
| Fixed-effects terms | ||||
| Intercept | 1.16 | 0.11 | 0.682 | 0.234 |
| Time trend termsb | ||||
| Spline term 1 | 2.510 | 0.301 | ||
| Spline term 2 | 2.648 | 0.282 | ||
| Spline term 3 | 2.904 | 0.218 | ||
| Spline term 4 | 1.193 | 0.165 | ||
| Spline term 5 | 2.551 | 0.184 | ||
| Spline term 6 | 0.253 | 0.191 | ||
| Spline term 7 | Ref. | |||
| Expert intensity rating (I) | ||||
| Ijob = 1 | −1.146 | 0.263 | ||
| Ijob = 2 | −0.425 | 0.194 | ||
| Ijob = 3 | Ref. | |||
| Ijob = 2/3 × Iind = 1 | −0.676 | 0.151 | ||
| Ijob = 2/3 × Iind = 2 | −0.483 | 0.138 | ||
| Ijob = 2/3 × Iind = 3 | Ref. | |||
| Variance components | ||||
| Between job | 0.23 | 0.10 | 0.13 | 0.07 |
| Between industry(job) | 0.55 | 0.10 | 0.48 | 0.10 |
| Between occurrence | 3.97 | 0.07 | 3.40 | 0.06 |
| Within occurrence | 3.05 | 0.02 | 3.05 | 0.02 |
| Total variance | 7.80 | 7.06 | ||
Ref., reference group; SE, standard error.
a
The random-effects parameter estimates are presented in a separate table.
b
See Supplementary Table S1 (available at Annals of Occupational Hygiene online) for values for spline terms 1–7 for each year.