Analysis of the clinical factors associated with anal function after intersphincteric resection for very low rectal cancer

Table 5 Anal dysfunction after stoma closure in patients with anastomotic stricture and those with no anastomotic stricture

Symptoms related to anal function	3 months		6 months		12 months
Symptoms related to anal function	Non-stricture	Stricture	Non-stricture	Stricture	Non-stricture	Stricture
Stool frequency, times/day	6.4 ± 3.6	11.4 ± 3.0**	6.8 ± 2.8	7.0 ± 2.1	5.1 ± 2.9	9.0 ± 5.3**
Urgency	12/14	4/5	8/13	2/5	3/12*	4/5**
Fragmentation	10/14	5/5	7/13	4/5	4/12	5/5**
Dyschesia	2/14	3/5	2/13	0/5	2/12	0/5
Medication use	4/14	4/5	3/13	4/5**	2/12	3/5
Nocturnal defecation	9/14	5/5	5/13*	5/5	5/12*	4/5

Data associated with each anal dysfunction at 6 and 12 months were statistically compared with those at 3 months for each condition of anastomotic sites using Wilcoxon signed-rank test. *P <0.05.
Data associated with each anal dysfunction of the stricture group were statistically compared with those of the non-stricture group at 3, 6, and 12 months using the Mann–Whitney U test. **P <0.05.

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