Ramirez 2001

Methods	3‐arm controlled randomised trial.
Participants	Between dates unspecified, an unspecified number of parturients were randomised in an unspecified setting and country. The population comprised primiparous women, with singleton pregnancy, at both high and low risk for PPH, who delivered by vaginal delivery. Exclusion criteria comprised parturients that were multiparous, severely anaemic, and hypertensive conditions during pregnancy.
Interventions	5 IU of oxytocin administered by an intravenous bolus versus 200 mcg ergometrine administered by an intravenous bolus vs placebo or control.
Outcomes	The study recorded the following outcome: Change in Hb level.
Notes	Contact with study authors for additional information: no. Additional data from authors: no. Abstract only available and data provided could not be used for meta‐analysis.
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.