TABLE 1.
Models testing for an association between class II telomere length (bp) and reproductive success while controlling for age (years)
| Model | Fixed effect | Estimate (s.e.) | F ratio | p‐value |
|---|---|---|---|---|
| Cross‐sectional | ||||
| (a) | Age | −301.0 (118.8) | 6.42 | .013 |
| No.# fledglings | 60.9 (49.6) | 1.51 | .22 | |
| (b) | Age | −269.0 (118.9) | 5.12 | .026 |
| No.# recruits | −16.4 (113.8) | 0.02 | .89 | |
| Longitudinal | ||||
| (c) | Age | −137.2 (54.9) | 6.25 | .013 |
| No.# fledglings | 3.83 (7.5) | 0.26 | .61 | |
| (d) | Age | −162.3 (38.6) | 17.68 | <.0001 |
| No.# recruits | 59.1 (25.9) | 5.21 | .024 | |
Models (a) and (b) are cross‐sectional, with respectively number of fledglings and recruits as estimates of reproductive success. Models (c) and (d) are longitudinal, with reproductive success coded as zero in spring 1, and as the number of fledglings or recruits produced in spring 1 at all later captures. This coding yields estimates of the effect of the number of offspring produced while controlling for age. As random effect gel identity was included in all models and individual identity in the longitudinal models. N = 103 in tables (a) and (b), and N = 231 in tables (c) and (d).