1 week ( 77.2 % vs. 54.8 % ) , 2 weeks ( 62.4 % vs. 34.4 % ) , 1 month ( 51.1 % vs. 28.6 % ) , and 1 year ( 28.6 % vs. 16.1 % ) after treatment , the success rate in the verum group differed significantly from the results in the placebo group .