Sorbe 1978.

Methods	Quasi‐randomised trial. Alternate ‐ odd and even numbers of mothers' hospital records. Not blinded.
Participants	Hospital in Sweden.
Interventions	Immediately after delivery of the anterior shoulder women received: A. 10 IU IV oxytocin B. 0.2 mg ergometrine IV Expectant management of the third stage was routine. Blood was collected in a specially designed bedpan which was placed under the buttocks of the women immediately after the delivery of the child. The measurement of the blood loss during the 2‐hour period was then performed with a graduated glass.
Outcomes	Blood loss, manual placental removal, placental separation time.
Notes	Dates of study: during 1975 to 1976 Funding sources: not reported Declarations of interest: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Randomisation by odd/even hospital record numbers.
Allocation concealment (selection bias)	High risk	Allocation would have been open with this method. Assume allocation not concealed given method of randomisation.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Does not appear to be blinded. Staff would be aware of treatment. Blinding seems unlikely from description of methods.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Assumed staff recorded outcomes. Blinding not mentioned in report.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Denominators not always reported in all tables. Not possible to tell from study report whether all participants reported on.
Selective reporting (reporting bias)	Unclear risk	Protocol unseen.
Other bias	Unclear risk	Unclear.