De‐Lalla 1988.

Study characteristics
Methods	RCT. Individual women. 2‐arm study.
Participants	Inclusion criteria Women undergoing CS. N = 300. Exclusion criteria Not documented.
Interventions	Intervention: 2nd generation cephalosporin (C2). Cefotetan. 2 g; IV; single dose when the cord is clamped. N = 106. Comparator: broad spectrum penicillin (P2). Mezlocillin. 2 g; IV; single dose when the cord is clamped. N = 194. Subgroups Type of CS: unclear Comparisons: no usable data reported
Outcomes	Fever > 38 ºC; endometritis; wound infection; UTIs; asymptomatic bacteriuria.
Notes	Dates of study: not reported. Setting: Obstetric and Gynecologic department of UCSC, Como, Italy. Funding sources: not reported. Declarations of interest: not reported. Additional information No data for this review Conference abstract only. Costs: this trial did not provide any information or comment on costs of treatment.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No information provided.
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)	High risk	We did not assess the trial protocol, but the conference abstract did not report pre‐specified outcomes to be assessed in the methods section.
Other bias	Unclear risk	No information provided. Also no information about funding source of study.