Comparing the 1 - and 10-year ` success ' rates , there was deterioration from 93 % to 73 % ( P < 0.05 ) in the TVT arm and 90 % to 75.4 % ( P < 0.05 ) in the AFS arm ; ` dry ' rates were 31.7 % , 50.8 % and 15.7 % , respectively .