Table 1 The characteristics of included patients (n = 216)
Variables | Infection group (n = 58) | No-infection group (n = 158) | t/χ2 | p |
|---|---|---|---|---|
Male/female | 36/22 | 89/69 | 1.237 | 0.065 |
Age (y) | 43.26 ± 6.94 | 43.92 ± 9.03 | 7.183 | 0.121 |
BMI (kg/m2) | 23.39 ± 1.09 | 24.01 ± 1.45 | 5.246 | 0.082 |
Alcohol drinking | 38 (65.51%) | 91 (57.59%) | 1.132 | 0.067 |
Smoking | 21 (36.21%) | 56 (35.44%) | 1.088 | 0.105 |
Hypertension | 33 (56.89%) | 88 (55.69%) | 1.235 | 0.071 |
Diabetes | 28 (48.28%) | 40 (25.32%) | 1.102 | 0.013 |
Hyperlipidemia | 14 (24.14%) | 35 (22.15%) | 1.976 | 0.097 |
Hypoproteinemia | 27 (46.55%) | 30 (18.99%) | 1.209 | 0.002 |
Types of TBI | 1.194 | 0.064 | ||
 Brain contusion | 29 (50.00%) | 72 (45.57%) |  |  |
 Subdural hematoma | 17 (29.31%) | 45 (28.48%) |  |  |
 Epidural hematoma | 12 (20.69%) | 41 (25.95%) |  |  |
GCS at admission | 5.87 ± 2.15 | 6.09 ± 2.23 | 1.556 | 0.081 |
Duration of mechanical ventilation prior to tracheostomy (h) | 14.91 ± 4.06 | 14.55 ± 5.13 | 2.059 | 0.102 |
Duration of coma (h) | 28.14 ± 7.39 | 16.11 ± 5.53 | 4.132 | 0.001 |
Duration of mechanical ventilation (days) | 6.26 ± 3.43 | 3.85 ± 2.01 | 2.206 | 0.033 |
Length of hospital stay (days) | 24.16 ± 4.14 | 17.09 ± 3.42 | 5.097 | 0.028 |
Length of hospital stay post tracheostomy (days) | 21.05 ± 3.77 | 14.26 ± 2.86 | 2.305 | 0.045 |
Death | 13 (22.41%) | 11 (6.97%) | 1.018 | 0.005 |