Table 7. Maternal fat mass models (mass in kg vs. fetal mass in kg for power law models, mass in kg vs. gestational age in weeks for all other models).

Model	${\widehat{\mathit{\theta }}}_0$	${\widehat{\mathit{\theta }}}_1$	${\widehat{\mathit{\theta }}}_2$	${\widehat{\mathit{\theta }}}_3$	$\mathcal{l}\left(\widehat{\mathit{\theta }}\right)$	AIC
Linear	17.067	0.14937	—	—	-3221.24	6446.48
Quadratic	17.249	0.11990	7.2110×10−4	—	-3221.13	6448.26
Cubic	17.165	0.19050	-0.0046448	9.6148×10−5	-3220.99	6449.98
Modified Gompertz	20.402	0.0058803	-0.0042400	-3.1426	-3221.12	6450.24
Modified Logistic	104.49	0.0070722	152.86	-9.3414	-3221.18	6450.36
Modified Power Law	4.0204	0.26566	17.224	—	-3221.90	6449.80
Modified Luecke Power Law	4.3011	0.25439	0.0064128	16.904	-3221.77	6451.54

For each model considered, the maximum likelihood parameter estimates ($\widehat{\theta }$), log-likelihood ($\mathcal{l}\left(\widehat{\theta }\right)$), and AIC are provided. The row describing the selected model is shown in boldface.