Group | Control group (n = 73) | Experimental group (n = 73) | t | P value |
Indwelling time (d) | 3.24 ± 0.92 | 11.05 ± 2.48 | 25.23 | P < 0.0001 |
Total number of puncturing times | 4.21 ± 1.09 | 1.04 ± 2.72 | 9.24 | P < 0.0001 |