Table 2.
MLwiN results for the duration parameters in the mastitis incidence survival model after reparameterization and hierarchical centring†
| Parameter |
Results for standard polynomials |
Results for orthogonal polynomials |
||
|---|---|---|---|---|
| Estimate‡ | ESS | Estimate‡ | ESS | |
| α0—intercept | −2.743 (0.400) | 2695 | −2.711 (0.401) | 3337 |
| α1—logt | −0.632 (0.034) | 926 | −0.633 (0.033) | 1997 |
| α2—logt2 | −0.468 (0.043) | 75 | −0.469 (0.039) | 779 |
| α3—logt3 | −0.181 (0.014) | 75 | −0.181 (0.013) | 1038 |
†
The models were run for 50000 iterations.
‡
Standard deviations are given in parentheses.