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. 2014 Jun 17;25(5):1164–1172. doi: 10.1093/beheco/aru099

Table 2.

Cox final reduced mixed model results for infant survival (N = 260)

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.