Table 2 Comparisons among different regression models of the fetal frontal antero-posterior diameter and occipito-frontal diameter based on the gestational age and transverse cerebellar diameter in appropriately grown fetuses
Parameters | R2 | ||||
|---|---|---|---|---|---|
Linear regression model | Quadratic regression model | Cubic regression model | Logarithmic regression model | ||
Gestational age (weeks) | |||||
FAPD | 0.920 | 0.939 | 0.939 | 0.936 | |
OFD | 0.931 | 0.958 | 0.958 | 0.951 | |
Transverse cerebellar diameter (mm) | |||||
FAPD | 0.879 | 0.926 | 0.927 | 0.917 | |
OFD | 0.883 | 0.943 | 0.944 | 0.929 | |