The influence of two policies of closure of the laparotomy wound in the rate of surgical site infection in colorectal cancer surgery: the New Operation trial

Study hypothesis: A decreased faecal load in the surgical wound diminished the incidence of surgical site infection.
Primary outcome(s): Incidence of surgical site infection. The criteria to define surgical site infection are described by Disease Control and Prevention National Healthcare Safety Network (Spain). For the purposes of this study superficial and deep wound infections would be considered as a unique entity condition. This will be measured 30 days after the operation.