TABLE A2.
Model estimates of survival probabilities (0,1) in lynx kittens (n = 532) in relation to timing of birth (birth date), litter size, and geographical region. Birth dates were standardized on regions before entering the model and lowest and highest values represent relatively early and late birth dates in each region. Litter ID (n = 245) nested under female lynx ID (n = 125) was included as random intercepts. Quadratic terms are estimated using the poly function in R (i.e., using orthogonal polynomials).
| Fixed effects | β (±SE) | p‐Value |
|---|---|---|
| Intercept a | 0.35 (0.51) | .50 |
| Birth date | 1.44 (3.42) | .67 |
| Birth date2 | 5.69 (3.66) | .12 |
| Litter size 2 b | 0.77 (0.48) | .10 |
| Litter size 3 b | −0.22 (0.50) | .66 |
| Litter size 4 b | −2.04 (0.97) | .04 |
| Region 55°N–65°N c | −0.12 (0.38) | .75 |
| Region >65°N c | 0.74 (0.43) | .08 |
| Random effects | Variance (SD) |
|---|---|
| Litter ID/Female lynx ID | 1.29 (1.14) |
| Female lynx ID | 0.59 (0.77) |
a
Litter size 1 and Region <55°N are the reference.
b
In relation to Litter size 1.
c
In relation to Region <55°N.