Taking into account the first 231 catheters ( 114 nontunneled [ control ] , 117 tunneled ) , we found that tunnelization decreased catheter-related sepsis ( odds ratio [ OR ] , 0.33 ; 95 % confidence interval [ CI ] , 0.13-0 .83 ; P = .02 ) , catheter-related septicemia ( OR , 0.23 ; 95 % CI , 0.07-0 .81 ; P = .02 ) , and , though not statistically significant , positive quantitative tip-culture rate ( OR , 0.62 ; 95 % CI , 0.35-1 .10 ; P = .10 ) .
