[Retracted] The Value of Transrectal Ultrasound in the Preoperative Diagnosis of Complex Anal Fistula (CAF): Based on a Retrospective Cohort Study

Table 8

Comparison of three methods in the diagnosis of superior sphincter AF (/%).

Project	Sensitivity	Accuracy	Specificity
Ultrasonic examination	53.33% (16/30)	81.25% (104/128)	90.82% (89/98)
MRI	63.33% (19/30)	89.84% (115/128)	97.96% (96/98)
Ultrasound+MRI	80.00% (24/30)	89.84% (115/128)	90.82% (89/98)
	4.822	0.775	5.258
	>0.05	>0.05	>0.05