Maric 2009.

Methods	Study design: parallel, randomised, double‐blind, placebo‐controlled clinical trial Analysis by ITT: not reported
Participants	Country: Croatia Centres: not reported Recruitment period: not reported Follow‐up period: not reported Surgery: open abdominal colorectal surgery Indication: not reported Urgency: elective Incision: midline Length of incision: not reported Exclusion criteria: not reported Number randomised = 50 (local anaesthetic n = 25; control n = 25) Post‐randomisation exclusion: not reported Number analysed: not reported Demographics: not reported
Interventions	Continuous wound infusion with: local anaesthetic: levobupivacaine 0.25% (n = 50) control: NaCl 0.9% (n = 50) Number of wound catheters: 2 Length of wound catheter: not reported Wound catheter position: suprafascial; 1 catheter placed along on each wound edge Infusion rate: 8 mL bolus followed by 8 mL/h total (4 mL bolus followed by 4 mL/h per catheter) Infusion duration: 48 h Intra‐operative analgesic co‐interventions: not reported Postoperative analgesic co‐interventions IV diclofenac 75 mg 12‐hourly IV morphine via PCA (programme not reported)
Outcomes	Outcomes relevant to current review Pain score (presumed at rest, VAS), recorded at 6, 12, 24 and 48 after surgerya Morphine consumption, recorded at 6, 12, 24 and 48 after surgery Nausea and vomitinga “Side effects” (details not reported)a
Notes	Currently only available as conference abstract. Contacted trial author on 22 February 2017. Did not receive response. aResults reported qualitatively only ("Satisfactory analgesia was achieved in both groups... Nausea and vomiting were less present in Group L. No side effects were observed.”).

ITT: intention‐to‐treat; IV: intravenous; PCA: patient‐controlled analgesia; VAS: visual analogue scale