Study	Reason for exclusion
DuGan 1966	Cross‐over RCT of cranberry juice versus no treatment. The 220 participants were elderly and from two hospital wards ‐ one male and one female. The female ward received the cranberry juice first followed by the male ward. This trial was excluded because from the description of the study design, it looked unlikely that this trial had be randomised. Also, the outcome was urinary odours, and no information was given about urinary tract infections. Furthermore, cross‐over trials may not be a relevant trial design for acute conditions such as urinary tract infections.
Nahata 1982	Cross‐over RCT of 27 people with bacteriuria comparing methenamine mandelate alone, with ascorbic acid or with ascorbic acid and cranberry juice. The primary purpose of this review was to assess the effect of methenamine on formaldehyde concentrations. Each patient was randomised to 5 days of each therapy. The trial was excluded because it contained no relevant outcomes. Furthermore, cross‐over trials may not be a relevant trial design for acute conditions such as urinary tract infections.
NCT01861353	Looking at the effects of starting cranberry juice early after an acute to prevent recurrent urinary tract infection

RCT ‐ randomised controlled trial