Essadi 2010.

Methods	Study design: parallel RCT Power calculation: no Intention‐to‐treat analysis: no
Participants	Inclusion criteria Setting: Pregnant women attending an antenatal clinic between October 2008 and October 2009 Country: NS Number: 760 randomised; 544 analysed Age: NS Exclusion criteria: NS
Interventions	Treatment group Cranberry juice: 250 mL 4 times/d Control group Water: 250 mL 4 times/d
Outcomes	Primary outcome: UTI Secondary: premature delivery
Notes	Abstract only, few details
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No details
Allocation concealment (selection bias)	Unclear risk	No details
Blinding of participants and personnel (performance bias) All outcomes	High risk	No, participants could tell difference between treatment and drinking water
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No details provided
Incomplete outcome data (attrition bias) All outcomes	High risk	Loss to follow‐up excluded and no best‐worst case scenario analysis Losses to follow‐up/withdrawals/exclusions post randomisation: 216
Selective reporting (reporting bias)	Low risk	Appropriate outcomes
Other bias	Unclear risk	Too few details to know Source of funding: NS