Table 4. Results of the homogeneity of slopes test using a GEE model on offspring telomere length with time period as a continuous repeated variable, chick identity as a random factor and parent sex, telomere length and the interaction between parent sex and telomere length as independent variables in the model.
| Variable | Wald χ2 | P-value |
|---|---|---|
| Telomere length | ||
| Time period | 29 671 | 0.000 |
| Parents' sex | 0.232 | 0.630 |
| Parents' telomere length | 3661 | 0.056 |
| Parents' sex × parents' telomere length | 0.428 | 0.513 |
Abbreviation: GEE, generalized estimating equation.
The complete GEE model is presented.