There was no evidence of a difference between the proportion of cases in the garlic and placebo groups ( @ versus @ % ; relative risk , RR@ @ ; @ % confidence interval , @ % CI @-@ @ ) , in the mean colony counts in both groups ( ratio of geometric means of candidal colony counts @ ; @ % CI @-@ @ ; P = @ ) , or difference in the number of women reporting abnormal vaginal symptoms during the @weeks before menstruation ( RR@ @ ; @ % CI @-@ @ ; P = @ ) .