Kikutani 2006

Methods	4‐arm active‐controlled randomised trial.
Participants	Between dates unspecified, 136 parturients were randomised in a hospital setting in Japan. The population comprised women of unspecified parity, either singleton or multiple pregnancy, at high risk for PPH, who were scheduled for caesarean with ASA I or II. Exclusion criteria comprised parturients that were affected by cardiovascular conditions, were scheduled for autologous blood transfusion, who had tocolytics administered or premature rupture of membranes.
Interventions	10 IU up to 20 IU of oxytocin administered by an intravenous bolus (n = 102) versus 200 mcg ergometrine administered by an intravenous bolus (n = 34).
Outcomes	The study recorded the following outcome: blood loss (mL).
Notes	Contact with study authors for additional information: no. Additional data from authors: no and data cannot be extracted for meta‐analysis. Manuscript translated from Japanese in full.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Randomisation sequence generation was not reported.
Allocation concealment (selection bias)	Unclear risk	Allocation concealment was not reported.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Methods of blinding were not reported.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not reported.
Objective assessment of blood loss	Unclear risk	Methods of evaluating blood loss were not reported.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Not reported
Selective reporting (reporting bias)	Unclear risk	The protocol of the study was unavailable for verification.
Intention to treat analysis	Unclear risk	Not reported.
Funding source	Unclear risk	Not reported.