Table 2.
Predictor | β | z | P value |
---|---|---|---|
Rainfall | −0.319 | ||
Number of adult females | 0.460 | ||
Maternal dominance rank | −0.457 | −1.35 | 0.180 |
Male immigration | −0.683 | −1.58 | 0.110 |
Male hierarchy stability | 0.092 | 0.23 | 0.820 |
Male takeover | 2.928 | 3.22 | 0.001 |
Intergroup encounter rate | −0.031 | −0.07 | 0.950 |
Infant age | −0.417 | −1.18 | 0.240 |
Infant gender | −0.251 | −0.39 | 0.700 |
Mother parity | −0.276 | −0.83 | 0.410 |
Number of adult females × rainfall | 0.697 | 2.00 | 0.045 |
Significant effects are highlighted in boldface. β is the hazard rate coefficient; a positive value indicates an increased risk of dying with increasing value of the predictor. z and P values not shown are uninformative because the respective term is involved in a higher order interaction.