Table 1. Final models for effects of parents' ages and interactions on the probability of recruitment of fledglings.
P-values for terms comprised in significant interactions are not shown because they are meaningless. For random factors we show variances (and SD) of intercepts.
| Fixed effects | Estimate (SE) | X2 | P |
|---|---|---|---|
| First sample (scored over 6 years) | |||
| Intercept | -2.7778 (1.7936) | ||
| Mother´s age | 0.1403 (0.0417) | ||
| Father´s age | 0.1145 (0.0405) | ||
| Laying date | -1.4780 (0.1914) | 59.07 | <0.001 |
| Status | 17.20 | <0.001 | |
| (a) Second chick | -0.3465 (0.0927) | ||
| (b) Third chick | -0.4894 (0.1918) | ||
| Years of monitoring | 0.1226(0.3326) | 0.14 | 0.714 |
| Mother´s age * Father´s age | -0.0108 (0.0044) | 5.97 | 0.015 |
| σ2 father ID = 0.0610 (0.2470); σ2 mother ID = 0.0740 (0.2720); σ2 cohort = 0.9480(0.9736); σ2 residual = 1 | |||
| Second sample (scored over 4 years) | |||
| Intercept | -2.1032 (0.5582) | ||
| Mother´s age | 0.1399 (0.0436) | ||
| Father´s age | 0.1065 (0.0423) | ||
| Laying date | -1.4817 (0.1971) | 55.64 | <0.001 |
| Status | 16.47 | <0.001 | |
| (a) Second chick | -0.3489 (0.0956) | ||
| (b) Third chick | -0.4727 (0.1941) | ||
| Mother´s age * Father´s age | -0.0102 (0.0047) | 4.68 | 0.030 |
| σ2 father ID = 0.0047 (0.0686); σ2 mother ID = 0.1500 (0.3873); σ2 cohort = 1.0860 (1.0400); σ2 residual = 1 | |||