Camacho‐Mauries 2013.

Study characteristics
Methods	Design: parallel‐group RCT Study period: January 2010–February 2011
Participants	Setting: elective general or colorectal surgery Type of stoma: ileostomy or colostomy Inclusion criteria Age ≥ 18 years End or loop stoma Willingness to restore the intestinal tract Exclusion criteria Altered mental status Inability to answer the survey
Interventions	PSSC using subcuticular non‐absorbable suture (n = 31) versus LSC using interrupted non‐absorbable suture (n = 30). No mesh or drain was used during closure in either group.
Outcomes	SSI, defined as any superficial or deep infection in the surgical site that occurred between day 1 and day 30 of the postoperative period Participant satisfaction (Likert questionnaire) 6 months after surgery Postoperative pain (VAS) 6 months after surgery Cosmetic appearance of scar (VAS) 6 months after surgery Incisional hernia Anastomotic leak Intestinal obstruction Operative time Length of hospital stay
Notes	The 2 groups were comparable in terms of baseline demographics (age, sex, BMI) and comorbidities. The length of follow‐up was 12 months. The study received no external funding, but it was unclear whether the protocol had been registered. The study authors declared no conflicts of interest.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Article describes method of randomisation but not type of randomisation.
Allocation concealment (selection bias)	Low risk	Method used for randomisation supports allocation concealment.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Participants and personnel were not blinded (blinding may not be practical in this setting).
Blinding of outcome assessment (detection bias) All outcomes	High risk	Outcome assessment was not blinded (blinding may not be practical in this setting).
Incomplete outcome data (attrition bias) All outcomes	Low risk	Complete outcome data for all participants.
Selective reporting (reporting bias)	Unclear risk	Unclear if protocol was registered.
Other bias	Low risk	No other sources of bias detected.