[Retracted] Effects of Adding Ultrasound Biofeedback to Individualized Pelvic Floor Muscle Training on Extensibility of the Pelvic Floor Muscle and Anterior Pelvic Organ Prolapse in Postmenopausal Women

Table 2

Ultrasonic data of participants before and after the 12-week PFMT.

	BSP (cm), mean ± SD (95%CI)			Levator hiatus area (cm^2), mean ± SD (95%CI)
	Before PFMT	After PFMT		Before PFMT	After PFMT
Study group	0.03 ± 0.66 (−0.21–0.23)	0.77 ± 0.71 (0.52–1.02)		22.89 ± 2.92 (22.01–23.99)	20.69 ± 2.77 (19.77–21.69)
Control group	−0.15 ± 0.69 (−0.37–0.08)	0.11 ± 0.66 (−0.11–0.33)	0.012	23.87 ± 3.99 (22.54–25.20)	22.85 ± 3.98 (21.53–24.18)	0.003
value					0.008

SD: standard deviation; PMFT: pelvic floor muscle training; value is from the independent-sample t-test; value is from the paired-sample t-test.