The cure rate of the canalith repositioning on the primary , secondary and tertiary treatment in group A was respective 72 % ( 38/53 ) and 81 % ( 43/53 ) and 85 % ( 45/53 ) , in group B was 68 % ( 30/44 ) and 80 % ( 35/44 ) and 84 % ( 37/44 ) , in group C was 89 % ( 47/53 ) and 94 % ( 50/53 ) and 98 % ( 52/53 ) .