( 4 ) There were no significant differences in mortality [ 7.14 % ( 4/56 ) vs. 8.33 % ( 5/60 ) , ( 2 ) = 0.058 , P = 1.000 ] , hospital day ( 35.915.2 days vs. 34.116.3 days , t = 16.330 , P = 0.620 ) , catheter retention time ( 25.04.5 days vs. 24.55.1 days , t = 26.427 , P = 2.560 ) and cost of hospitalization ( 10 thousand Yuan : 3.421.22 vs. 3.721.30 , t = 13.215 , P = 1.560 ) between intervention group and control group .