Table. 1 Intercepts and allometric scaling coefficients of six different linear regression models fitted to the same dataset of mammalian species (N = 738)

From: Quantifying maternal investment in mammals using allometry

Model

Intercept (CI95%)

Scaling ma (CI95%)

Scaling d (CI95%)

SLR

−0.196 (−0.216, −0.176)

0.778 (0.765, 0.791)

–

PLMM

−0.192 (−0.534, 0.173)

0.806 (0.782, 0.833)

–

SMA

−0.190 (−0.210, −0.170)

0.799 (0.786, 0.813)

–

MA

−0.192 (−0.212, −0.172)

0.795 (0.781, 0.808)

–

MSLR

0.664 (0.508, 0.819)

0.867 (0.847, 0.887)

−0.398 (−0.470, −0.327)

MPLMM

0.204 (−0.255, 0.628)

0.836 (0.804, 0.870)

−0.199 (−0.334, −0.0701)

  1. ma represents the default adult mass and d the investment duration. All regression methods led to a good adjustment of the data (r2 > 0.947, p < 0.001). Note that intercepts given here correspond to the estimates directly given by model fits. They thus correspond to the location where the regression line would cut the log10-transformed y-axis.
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