At 5-9 days after the completion of treatment , 73 and 81 patients from the 3 day and 7 day groups , respectively , were evaluated by intention-to-treat analysis ; the microbiological efficacies were 58.9 % eradication ( 43/73 ) , 20.5 % persistence ( 15/73 ) and 8.2 % replaced ( 6/73 ) , and 66.7 % eradication ( 54/81 ) , 6.2 % persistence ( 5/81 ) and 7.4 % replaced ( 6/81 ) , respectively ( P = 0.048 ) .