The comparison of conventional Doppler and UA velocity parameters at 37 weeks’ gestation among three groups
| Parameters | FGR (n=39) | SGA (n=57) | AGA (N=473) | F | P value |
| UA-PI | 0.85±0.1 | 0.83±0.2 | 0.83±0.2 | 0.629 | 0.533 |
| MCA-PI | 1.47±0.2 | 1.48±0.3 | 1.48±0.3 | 0.023 | 0.977 |
| CPR | 1.77±0.4 | 2.02±1.7 | 1.91±1.1 | 0.580 | 0.560 |
| UA-MDV | 14.3±3.3 | 15.9±3.9 | 19.5±5.1 | 30.795 | <0.001*† |
| UA-TAMXV | 23.9±4.9 | 26.8±5.9 | 32.0±7.2 | 34.874 | <0.05*†‡ |
| UA-PSV | 36.7±6.8 | 40.6±8.0 | 46.8±10.2 | 26.655 | <0.05*†‡ |
| UA-EDV | 14.9±3.4 | 16.7±4.3 | 20.6±5.6 | 31.400 | <0.001*† |
Values are given as the means±SDs, with p<0.05 considered statistically significant.
*AGA versus SGA.
†AGA versus FGR.
‡SGA versus FGR.
AGA, adequate for gestational age; CPR, cerebroplacental ratio; FGR, fetal growth restriction; MCA-PI, middle cerebral artery pulsatility index; SGA, small for gestational age; UA-EDV, umbilical artery end-diastolic velocity; UA-MDV, umbilical artery mean diastolic velocity; UA-PI, umbilical artery pulsatility index; UA-PSV, umbilical artery peak systolic velocity; UA-TAMXV, umbilical artery time-averaged maximum velocity.