Group

N

Hospital

infection

Planned

extubation

Successful one-time

puncture

Combination group

30

1 (3.33)

28 (93.33)

28 (93.33)

PICC group

30

7 (23.33)

22 (73.33)

21 (70.00)

t

5.1923

4.3200

5.4545

p

0.0227

0.0377

0.0195