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

Table 1

Clinical characteristics of the study groups by diagnostic centre.

Variable	Centre 1	Centre 2	Centre 3
Sample size	21	39	63
Observation time (months)	19	26	61
Gender (F/M)	14/7	29/10	56/6
Age (yrs)
Mean	45.5 ± 2	51.4 ± 4	53.6 ± 1.8
Range	24–73	44–69	38–86
Time interval 1 (yrs)
Surgery-to-imaging
Mean	5 ± 2	4 ± 1	2 ± 1
Range	3–6	2–5	1–4
Time interval 2 (months)
Surgery-to-symptom recurrence
Mean	8 ± 2	11 ± 3	5 ± 2
Range	2–10	1–15	3–12