There was no evidence of a difference between the proportion of cases in the garlic and placebo groups ( 76 versus 90 % ; relative risk , RR0 .85 ; 95 % confidence interval , 95 % CI 0.67-1 .08 ) , in the mean colony counts in both groups ( ratio of geometric means of candidal colony counts 0.63 ; 95 % CI 0.39-10 .03 ; P = 0.74 ) , or difference in the number of women reporting abnormal vaginal symptoms during the 2weeks before menstruation ( RR1 .03 ; 95 % CI 0.67-1 .58 ; P = 0.91 ) .