Sartori 2009.

Methods	Retrospective review
Participants	75 patients between 1984 and 2005
Interventions	25 patients underwent surgery; 50 patients treated conservatively
Outcomes	Median survival of all patients was 19.33 weeks (0 to 102 weeks) 72% of those who underwent surgery returned to oral feeding compared with 60% treated conservatively
Notes	The authors also try to define a scoring system to determine the decision for surgery Same patient group as Sartori 2010
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Unclear. "We retrospectively reviewed 270 patients with epithelial ovarian cancer treated at the division of Gynaecologic Oncology, Department of obstetrics and Gynaecology, School of Medicine, University of Brescia between 1984 and 2005. Of these patients, 75 patients (28%) developed bowel obstruction related to progressive disease after initial treatment."
Allocation concealment (selection bias)	High risk	"Information for both relevant pathological and clinical features and follow‐up data were obtained from medical records of all patients."
Blinding (performance bias and detection bias) All outcomes	High risk	"Information for both relevant pathological and clinical features and follow‐up data were obtained from medical records of all patients."
Blinding of participants and personnel (performance bias) All outcomes	High risk	"Information for both relevant pathological and clinical features and follow‐up data were obtained from medical records of all patients."
Blinding of outcome assessment (detection bias) All outcomes	High risk	"Information for both relevant pathological and clinical features and follow‐up data were obtained from medical records of all patients."
Selective reporting (reporting bias)	Unclear risk	Outcomes reported specifically for patients with bowel obstruction due to advanced ovarian cancer Outcomes reported for all patients Results not reported according to surgical intervention