Table 1. Bivariate analyses of the effects of age and body mass on the reproductive potential (fertility, potential litter size) of roe deer females in Slovenia.
Relations between variables (their categories are listed in parentheses) were analysed by tests for homogeneity. The results of each of eight analyses are presented in each row.
| Variable 1 | Variable 2 | Pearson chi-square value | N | df | P | Note |
|---|---|---|---|---|---|---|
| Age (yearlings, adults) | Fertility (yes, no) | 18.2* | 1312 | 1 | <<0.001 | All individuals |
| Age (2–7, 8+) | Fertility (yes, no) | 0.7* | 1007 | 1 | 0.398 (ns) | Only adults |
| Age (yearlings, adults) | Litter size (1, 2, 3, 4+) | 125.1 | 1280 | 3 | <<0.001 | Only fertile individuals |
| Age (2–7, 8+) | Litter size (1, 2, 3, 4+) | 6.3 | 993 | 3 | 0.097 (ns) | Only fertile adults |
| Body mass–kg (<12, 12–14, 14–16, 16–18, 18+) | Fertility (yes, no) | 111.0 | 1312 | 4 | <<0.001 | All individuals |
| Body mass–kg (<14, 14–16, 16–18, 18+) | Fertility (yes, no) | 15.5 | 1007 | 3 | 0.001 | Only adults |
| Body mass–kg (<12, 12–14, 14–16, 16–18, 18+) | Litter size (1, 2, 3+) | 182.0 | 1280 | 8 | <<0.001 | Only fertile individuals |
| Body mass–kg (<12, 12–14, 14–16, 16–18, 18+) | Litter size (1, 2, 3+) | 73.9 | 993 | 8 | <<0.001 | Only fertile adults |
* With correction for continuity.