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 |