Methods: study authors, location, study design, and duration of follow-up

Participants: n, age (mean/median, range/SD), number of documented previous UTIs, recent antibiotic use, and whether currently pregnant

Interventions: methenamine hippurate

Comparators: placebo/no treatment or any antibiotic

Primary and secondary outcomes: UTI symptoms, adverse events (such as nausea, diarrhoea, rash, or any symptoms reported as an adverse event by the trial author), bacteriuria, antibiotic use, and antibiotic resistance