Influencing factors | Infected group (n = 32) | Noninfected group (n = 355) | Infection rate (%) | X2 value | P value | |
---|---|---|---|---|---|---|
Sex | Male | 12 | 170 | 6.59 | 1.271 | 0.274 |
Female | 20 | 185 | 9.76 | |||
Age (years) | > 45 | 19 | 140 | 11.95 | 4.821 | 0.028 |
≤ 45 | 13 | 215 | 5.70 | |||
BMI (kg/m2) | > 24.9 | 8 | 102 | 7.27 | 0.201 | 0.654 |
≤ 24.9 | 24 | 253 | 8.66 | |||
History of hypertension | Yes | 11 | 87 | 11.11 | 1.512 | 0.219 |
No | 21 | 268 | 7.23 | |||
History of diabetes | Yes | 8 | 56 | 12.5 | 1.810 | 0.179 |
No | 24 | 299 | 7.43 | |||
ASA score | > 2 | 8 | 117 | 6.40 | 0.794 | 0.737 |
≤ 2 | 24 | 238 | 9.16 | |||
Tumour size (cm) | > 1 | 29 | 266 | 9.83 | 3.990 | 0.046 |
≤ 1 | 3 | 89 | 3.26 | |||
Operation time (min) | > 240 | 16 | 85 | 15.84 | 10.333 | 0.001 |
≤ 240 | 16 | 270 | 5.59 | |||
Bleeding volume (ml) | > 400 | 9 | 39 | 18.75 | 7.936 | 0.005 |
≤ 400 | 23 | 316 | 6.78 | |||
Kelly Grade | > 2 | 6 | 22 | 21.43 | 6.890 | 0.009 |
≤ 2 | 26 | 333 | 7.24 | |||
Postoperative CSF leakage | Yes | 10 | 37 | 21.27 | 11.934 | 0.001 |
No | 22 | 318 | 6.47 | |||
Sinusitis | Yes | 9 | 58 | 13.43 | 2.849 | 0.091 |
No | 23 | 297 | 7.19 | |||
Antibacterial drug use during perioperative period | Yes | 26 | 327 | 7.37 | 4.322 | 0.038 |
No | 6 | 28 | 17.65 | |||
Lumbar cistern drainage | Yes | 5 | 18 | 21.74 | 5.85 | 0.016 |
No | 27 | 337 | 7.42 | |||
Blood transfusion | Yes | 5 | 19 | 20.83 | 5.325 | 0.021 |
No | 27 | 336 | 7.44 |