The effect of intravaginal estriol or placebo on the incidence of UTI in postmenopausal women with recurrent UTIs. Estrogen therapy was associated with a much greater likelihood of remaining free of infection.
UTI: urinary tract infection.
Data from: Raz R, Stamm WE. A controlled trial of intravaginal estriol in postmenopausal women with recurrent urinary tract infections. N Engl J Med 1993; 329:753.