The Wexner score for anal incontinence, which evaluates postoperative anal function, was significantly lower in the high IGF‐1 group than in the low IGF‐1 group at both 7 days (Figure 2a; p < 0.001) and 14 days post‐surgery (Figure 2b; p < 0.01). This evidence concerns the gene IGF1 and Bowel incontinence.