Table 1.
Results of the multiple logistic regressions in which chick survival was examined in relation to parental feeding treatment, chick sex, and position in the laying sequence (n = 171 chicks), and hatching sex ratio was examined in relation to parental feeding treatment and position in the laying sequence (n = 135 chicks).
| Deviance | χ2 | df | P | |
|---|---|---|---|---|
| Chick survival | ||||
| Null model | 195.02 | 170 | ||
| Final model | 187.40 | 166 | ||
| Sequence | 4.38 | 1 | 0.037 | |
| Feeding treatment | 6.88 | 1 | 0.009 | |
| Sex | 2.40 | 1 | 0.121 | |
| Sex × sequence | 4.12 | 1 | 0.040 | |
| Hatching sex ratio | ||||
| Null model | 185.90 | 134 | ||
| Final model | 176.76 | 131 | ||
| Sequence | 0.82 | 1 | 0.663 | |
| Feeding treatment | 0.51 | 1 | 0.477 | |
| Feeding treatment × sequence | 8.09 | 1 | 0.018 |
Only significant interactions are shown.