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

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

Symptoms related to anal function 3 months 6 months 12 months
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
  1. 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.
  2. 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.