Groups

Control group (n = 75)

Research group (n = 75)

t

P value

Catheter retention time (d)

2.92 ± 1.41

11.53 ± 6.91

10.69

<0.001

Total number of punctures (times)

3.35 ± 1.61

1.07 ± 0.25

12.48

<0.001