CD2 and pneumonia: An association was found in univariable analyses with pneumonia (P = 0.031), overall complications (P = 0.003) and wound infection (P = 0.048)36 and not with graded complications,26 ileus, UTI, CD1, CD2, CD3, CD4,36 overall CD3–5,39 surgical‐related complications CD3–543 and early postoperative small bowel obstruction (EPSBO).49