Table 6.

Output of the Cox proportional hazards model (model 4) to investigate the influence of environmental and physiological factors on mortality (N = 345 time points and 12 mortalities). Whole model: log-likelihood = −46.054, $R_{\mathrm{adj}}^2=\mathrm{0.441.}$ β is the hazard rate coefficient where a positive value indicates an increased risk of mortality.

factor	β ± s.e.	hazard ratio	z value	Pr(>|z|)
fGCM levels	0.631 ± 0.344	1.880	1.840	0.066
daily temperature	−1.470 ± 1.083	0.230	−1.360	0.170
food availability	−0.071 ± 4.355	1.074	0.02	0.990
standardized rank	−0.516 ± 0.633	0.600	−0.820	0.410
water availability	0.959 ± 3.011	2.610	0.320	0.170