Table 25. Fetal left ventricle blood flow models (mL/min vs. fetal mass in g for power law models, mL/min 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 Growth	8.2127	—	—	—	-1328.70	2659.41
Quadratic Growth	-6.4372	0.46894	—	—	-1002.69	2009.38
Cubic Growth	-18.700	1.3115	-0.013824	—	-992.93	1991.86
Gompertz	2.4461×10−5	1.5891	0.092460	—	-989.10	1984.20
Logistic	506.30	0.21916	30.231	—	-985.42	1976.84
Power Law	0.42909	0.86053	—	—	-991.64	1987.28
Luecke Power Law	0.0024511	2.2736	-0.095998	—	-989.07	1984.14

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.