Clinical Utility of the Prenatal Ultrasound Score of the Placenta Combined with Magnetic Resonance Imaging in Diagnosis of Placenta Accreta during the Second and Third Trimester of Pregnancy

Table 3

Between-group comparison of ultrasound scores.

Group	Number of cases	Ultrasound score
Accreta group	75	8.05 ± 1.52
Non-accreta group	33	1.94 ± 0.74
t		21.934
		<0.001