Prediction of Scar Myometrium Thickness and Previous Cesarean Scar Defect Using the Three-Dimensional Vaginal Ultrasound

Table 3

Comparison on the number of cesarean sections and uterine position.

Item		PCSD group (70 cases)		Control group (70 cases)		x^2	p
		Cases	Proportion (n%)	Cases	Proportion (n%)
The number of cesarean sections (times)	1	34	48.57	55	78.57	13.121	0.003
	2	32	45.71	13	18.57
	3	4	5.71	2	2.86
Uterine position	Anterior	21	30.00	46	65.71	16.375	0.000
	Posterior	49	70.00	24	34.29