Table 2.
Coefficient estimates for the retained fixed effects in the best model from Table 1 (ΔAIC = 0; Table 1) for each response variable.
| Response variable | Fixed/random effect | Coefficient estimate | Standard error | P value | R2 | CI |
|---|---|---|---|---|---|---|
| MPPM (86%) | Intercept | −0.047 | 0.135 | <0.0001 | 0.092 | 0.013–0.225 |
| Birth date | −0.253 | 0.092 | 0.006 | 0.092 | 0.013–0.225 | |
| MDML (16%) | Intercept | −0.041 | 0.239 | <0.0001 | 0.436 | 0.321–0.580 |
| Year (2014) | 0.265 | 0.314 | 0.0002 | 0.007 | 0.000–0.080 | |
| Year (2015) | 0.944 | 0.273 | 0.105 | 0.019–0.242 | ||
| Year (2016) | 0.304 | 0.284 | 0.011 | 0.000–0.092 | ||
| Year (2017) | 0.141 | 0.277 | 0.003 | 0.000–0.064 | ||
| Birth date | 0.165 | 0.093 | 0.076 | 0.039 | 0.000–0.148 | |
| MPPM | 0.571 | 0.090 | <0.0001 | 0.347 | 0.208–0.489 | |
| PDMG (12%) | Intercept | −0.327 | 0.258 | <0.0001 | 0.329 | 0.218–0.493 |
| Year (2014) | 0.475 | 0.343 | 0.0002 | 0.020 | 0.000–0.111 | |
| Year (2015) | 0.810 | 0.298 | 0.071 | 0.005–0.196 | ||
| Year (2016) | 0.262 | 0.310 | 0.007 | 0.000–0.081 | ||
| Year (2017) | −0.185 | 0.303 | 0.004 | 0.000–0.069 | ||
| Birth date | 0.206 | 0.096 | 0.031 | 0.054 | 0.002–0.171 | |
| MPPM | 0.446 | 0.093 | <0.0001 | 0.220 | 0.095–0.370 | |
| MPPM DEVIANCE (63%) | Intercept | 0.063 | 0.117 | <0.0001 | 0.126 | 0.036–0.274 |
| Birth date | 0.255 | 0.103 | 0.013 | 0.086 | 0.010–0.217 | |
| HRV | 0.219 | 0.117 | 0.061 | 0.065 | 0.004–0.188 | |
| MDML DEVIANCE (37%) | Intercept | 0.032 | 0.110 | <0.0001 | 0.182 | 0.072–0.336 |
| Birth date | 0.336 | 0.104 | 0.0011 | 0.129 | 0.031–0.270 | |
| HRV | 0.285 | 0.110 | 0.0099 | 0.095 | 0.014–0.229 | |
| PDMG DEVIANCE (7%) | Intercept | −0.003 | 0.099 | <0.0001 | 0.149 | 0.050–0.300 |
| Birth date | 0.334 | 0.098 | 0.0007 | 0.117 | 0.025–0.256 | |
| HRV | 0.235 | 0.010 | 0.0186 | 0.061 | 0.003–0.182 |
Mass-transfer efficiency (MTE) was best explained by the null model and therefore not included here. The percentage values beside each response variable denote the stochastic variation accounted for by ID derived from conditional and marginal coefficients of determination computed using r.squaredGLMM from the MuMIn package93,96. The table also provides R2 (with 95% confidence intervals) for fixed effects within the best models (derived using r2beta96). Abbreviations: HRV = Resting heart rate variability, MPPM = maternal post-partum mass, MDML = maternal daily mass loss rate, PDMG = pup daily mass gain rate, MTE = mass transfer efficiency.