Table 2 The characteristics comparison of infection and no infection groups
Factors | Infection group(n = 65) | No infection group(n = 860) | χ2/F | p |
|---|---|---|---|---|
Gender | ||||
 Male | 31 (47.69%) | 418 (48.60%) | 0.745 | 0.190 |
 Female | 34 (53.31%) | 442 (51.40%) | ||
BMI (kg/m2) | ||||
  < 24 | 33 (50.77%) | 435 (50.58%) | 0.905 | 0.117 |
  ≥ 24 | 32 (49.23%) | 425 (49.42%) | ||
Complicated diseases | ||||
 Diabetes | 18 (27.69%) | 219 (25.47%) | 0.215 | 0.092 |
 Hypertension | 29 (44.61%) | 370 (43.02%) | ||
 Hyperlipidemia | 15 (23.08%) | 183 (21.28%) | ||
Use of immunosuppressants | ||||
 Yes | 16 (24.62%) | 201 (23.37%) | 0.741 | 0.121 |
 No | 49 (75.38%) | 659 (76.63%) | ||
Bleeding location | ||||
 Basal ganglia | 35 (53.85%) | 422 (49.07%) | 1.128 | 0.093 |
 Thalamus | 19 (29.23%) | 268 (31.16%) | ||
 Brain lobe | 4 (6.15%) | 66 (7.67%) | ||
 Ventricle | 4 (6.15%) | 64 (7.44%) | ||
 Cerebellum | 2 (3.08%) | 28 (3.26%) | ||
 Brain stem | 1 (1.54%) | 12 (1.39%) | ||
ASA grade | ||||
 I-II | 26 (40.00%) | 680 (79.07%) | 8.911 | 0.015 |
 III-IV | 39 (60.00%) | 180 (20.93%) | ||
ICU stay | ||||
 Yes | 22 (33.85%) | 256 (29.77%) | 0.948 | 0.101 |
 No | 43 (66.15%) | 604 (70.23%) | ||
The length of hospital stay (days) | ||||
  ≥ 10 | 55 (84.62%) | 387 (45.00%) | 0.590 | 0.012 |
  < 10 | 10 (15.38%) | 573 (55.00%) | ||
Consecutive operation | ||||
 Yes | 54 (83.08%) | 408 (47.44%) | 2.405 | 0.008 |
 No | 11 (16.92%) | 452 (52.56%) | ||
Duration of surgery (hours) | ||||
  ≥ 4 | 50 (76.92%) | 437 (50.81%) | 0.155 | 0.021 |
  < 4 | 15 (23.08%) | 423 (49.19%) | ||
Antibiotics use before surgery | ||||
 Yes | 48 (73.85%) | 612 (71.17%) | 3.087 | 0.094 |
 No | 17 (26.15%) | 248 (28.83%) | ||
EVD | ||||
 Yes | 52 (80.00%) | 508 (59.07%) | 0.152 | 0.026 |
 No | 13 (20.00%) | 172 (40.93%) | ||
Estimated hematoma volume | ||||
 >45 ml | 32 (49.23%) | 416 (48.37%) | 1.048 | 0.083 |
  ≤ 45 ml | 26 (50.77%) | 444 (51.63%) | ||