Akarsu 2010.

Methods	Randomized, double‐blind, parallel, active‐controlled. Pain evaluated up to 6 h after dose administered.
Participants	Type of surgery: cesarean section Paracetamol group Entered/completing: 40/unclear Age (mean, SD): 24.2 ± 1.1 Sex (male, %): 0 Control group Entered/completing: 40/unclear Age (mean, SD): 24.4 ± 1.2 Sex (male, %): 0
Interventions	Paracetamol 1 g IV over 15 min at first complaint of pain Diclofenac 75 mg IM as above
Outcomes	Primary: time to first rescue analgesic (1 mg/kg IM pethidine) Secondary: VAS pain scores at 30 min, 1, 2, 4 and 6 h; adverse events
Source of funding	Not reported
Were treatment groups comparable at baseline?	Yes ‐ all P values > 0.05: demographic characteristics, week of pregnancy, newborn's weight, Apgar scores, operation time, time to first postoperative analgesic requirement
Details of preoperative pain	Participants with previous continuous analgesic use were excluded
Notes	Translated from Turkish using Google Translate
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Used envelopes to randomly divide 2 groups – no additional details given
Allocation concealment (selection bias)	Unclear risk	No details
Blinding (performance bias and detection bias) All outcomes	Unclear risk	No details but stated as double‐blinded
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	No mention of participants dropping out
Selective reporting (reporting bias)	Low risk	All outcomes in Methods section reported in Results
Size	High risk	Fewer than 50 participants per arm of the study (40 paracetamol, 40 diclofenac)