Table 1.

Outcome variables assessed during the study.

			Post-operation							Follow up
	Preoperation	Intraoperation	12 h	Day 1	Day 2	Day 3	Day 5	Day 7	Wk 2	Wk 3	Wk 4	Wk 8	1 y
Primary outcomes
Anal function
Incontinence score	✓										✓
Circumference of anal canal	✓										✓
Recurrence										✓	✓	✓	✓
Secondary outcomes
Operating time		✓
Intraoperative blood loss		✓
Weight and volume of excised specimen		✓
Anal pain			✓	✓	✓	✓	✓
Bleeding			✓	✓				✓	✓
Urinary retention			✓	✓	✓	✓	✓	✓	✓
Anal edge edema			✓	✓				✓	✓