Wells 1994.

Methods	RCT. Individual women. 3‐arm study.
Participants	Inclusion criteria Women undergoing emergency CS. N = 84. Exclusion criteria No information provided.
Interventions	Intervention 1: cephalosporin (B) + nitroimidazole (I). Cefuroxime plus metronidazole. N = ?. Intervention 2: nitroimidazole (I). Metronidazole. N = ?. Comparison: placebo. Placebo. N = ?.
Outcomes	Temperature; wound infection; offensive lochia; UTI.
Notes	Setting: authors from Grey's Hospital, London, UK. Subgroups Non‐elective CS. After cord clamping. IV administration. Single dose. We have not included data from this study because no denominator data were provided. We are attempting to contact the authors. Conference abstract only, no published version of this study has been identified. No information about funding source of study.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	"...were randomised...".
Allocation concealment (selection bias)	Unclear risk	No information provided.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	No information provided.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No information provided.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	No information provided.
Selective reporting (reporting bias)	Unclear risk	We did not assess trial protocol.
Other bias	Unclear risk	No baseline data and other aspects of possible bias were unclear. No information about funding source of study.