Turunen 2009.

Methods	RCT Approved by the ethics committee and written informed consent obtained from each patient Setting: Finland Funding: unspecified
Participants	60 ASA physical status score of 1 to 3 consecutive elective patients with complicated diverticular disease (1 acute episode in patients younger than 50 years, and 2 in older patients, or a preoperative stricture) undergoing laparoscopic sigmoid resection
Interventions	Treatment group: TEA (T10‐T11) with ropivacaine 0.5% during surgery and ropivacaine 0.2% for 48 hours after surgery (n = 29) Control group: IV or IM oxycodone (n = 29) General anaesthesia for all participants. All participants received daily doses of ketoprofen including three 100‐mg doses administered intravenously (IV) or orally, 4 paracetamol 1‐g doses given IV or orally and, if needed, oxycodone 0.05 mg/kg IV or 0.15 mg/kg administered intramuscularly
Outcomes	Time to first flatus VAS scores on movement at 24, 48 and 72 hours Leak
Notes	Study authors contacted for additional information on 12 July 2014, but did not reply
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	"Randomization in blocks of 10"
Allocation concealment (selection bias)	Low risk	"sealed envelopes"
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not mentioned
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not mentioned
Incomplete outcome data (attrition bias) All outcomes	Low risk	1 participant from each group was excluded because of a missing self care questionnaire
Selective reporting (reporting bias)	Low risk	All results provided
Other bias	Low risk	Groups well balanced. "The data were analyzed on an intention‐to‐treat basis, which means that patients with unsuccessful epidural analgesia were counted as epidural analgesia patients"