Postoperative MR Defecography following Failed STARR Procedure for Obstructive Defecation Syndrome: A Three-Centre Experience

Table 2

Comparison of pre-postoperative symptoms and use of preoperative diagnostic tools by centre in the patient population.

Variable	Centre 1		Centre 2		Centre 3		Total		Total sample statistics
	Pre	Post	Pre	Post	Pre	Post	Pre	Post	Delta post versus pre
Symptoms
Sample size	21		39		63		123
ODS	13	18	22	27	41	48	76	93	22%
Rectocele/intussusception	14	2	24	8	54	22	92	32	−65%
POP	6	2	4	4	11	9	21	15	−29%
Pain	1	9	1	12	0	23	2	44	2.100%
Tenesmus	0	5	0	3	1	12	1	20	1.900%
Urgency/incontinence	1	2	0	6	1	22	2	30	1.400%
LUTs/sexual	0	2	0	1	2	9	2	12	500%
Reintervention	n.a.	1	n.a.	2	n.a.	5	n.a.	8	n.m.
Stricture	n.a.	1	n.a.	2	n.a.	3	n.a.	6	n.m.
Preoperative diagnostic tools									Rate
Physical examination	21		39		63		123		100%
Imaging studies	4		11		20		35		28%
P-studies	0		3		4		7		6%
Anoproctoscopy	0		2		2		4		3%
EMG	0		0		1		1		1%

ODS: obstructed defecation syndrome; POP: pelvic organ prolapse; LUTs: lower urinary tract symptoms; n.a.: not available; n.m.: not meaningful.