Kim 1999.

Study characteristics
Methods	RCT
Participants	Inclusion criteria: Women undergoing CS under combined spinal (tetracaine) and epidural (buprenorphine and bupivacaine) anaesthesia. N = 60 Exclusion criteria:
Interventions	Intervention 1: dopamine antagonist (Comparison 2) Metoclopramide 10 mg IV N = 20 Intervention 2: 5HT3 antagonist (Comparison 1) Ondansetron 4 mg IV N = 20 Comparator: placebo Saline N = 20
Outcomes	Nausea, vomiting, satisfaction, side effects.
Notes	Setting: Eulgi General Hospital, Seoul, South Korea Dates: not reported Funding source: not reported in abstract Declaration of interest: not reported in abstract English abstract only, rest of paper in Korean. We will attempt to get translation No data for the review in the abstract.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Just says "randomly"
Allocation concealment (selection bias)	Unclear risk	No information
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	No information provided in abstract
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No information provided in abstract
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	60 women recruited but nothing to say how many analysed
Selective reporting (reporting bias)	Unclear risk	Side effects reported in results, but not mentioned in Methods. Need a translation of the full paper
Other bias	Unclear risk	Very little methodology in the Abstract to assess for other biases