Moodie 1976.

Methods	Randomised trial. Not stated, authors state "...the allocation being at random..."..
Participants	148 women with instrumental deliveries (143 forceps, 5 vacuum) under epidural anaesthesia in a hospital in New Zealand. Excluded multiple births and breech presentation.
Interventions	At delivery of the anterior shoulder: A. oxytocin 5 IU IV (n = 70); B. ergometrine 0.5 mg IV (n = 78). No mention of other aspects of the management of the third stage of labour.
Outcomes	Blood loss (mL). Emetic sequelae (retching or vomiting and nausea).
Notes	Blood loss was measured in only 54% of women (80/148), so this outcome was not included in this review. Dates of study: not reported Funding sources: not reported Declarations of interest: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Method of random sequence generation not described.
Allocation concealment (selection bias)	Unclear risk	Authors only state: "...the allocation being at random...". Allocation described as random but sequence generation, and therefore predictability, unclear.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not mentioned in report
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not mentioned in report
Incomplete outcome data (attrition bias) All outcomes	Low risk	No (for nausea and vomiting). 46% of women excluded from outcome "blood loss", thus this outcome was not included in the review.
Selective reporting (reporting bias)	Unclear risk	Protocol unseen.
Other bias	Unclear risk	No data.