The two treatment groups also showed no significant differences in the rates of successful LC ( 98.38 % vs 97.85 % ) , CBD stone retainment ( 0.54 % vs 0.00 % ) , CBD injury ( 0.54 % vs 0.53 % ) and other complications ( 2.16 % vs 2.15 % ) , as well as in duration of hospital stay ( 5.101.41 d vs 4.991.53 d ) .