Background
Methods
Identification of acute surgical site infection
Data collection
Statistical analysis
Results
Risk factors | ASSI (mean ± SEM, n = 26) | Non-ASSI (mean ± SEM, n = 897) |
t
|
p
|
---|---|---|---|---|
Age (year) | 54.58 ± 2.710 | 54.93 ± 0.5503 | 0.1090 | 0.9132 |
BMI (kg/m2) | 24.85 ± 0.9210 | 22.76 ± 0.1179 | 2.935 |
0.0034
|
Smoking (year) | 21.27 ± 2.765 | 10.18 ± 0.3913 | 4.770 |
<0.0001
|
Number of internal fixation metals (piece) | 5.423 ± 0.4374 | 5.252 ± 0.07764 | 0.3703 | 0.7112 |
Operative time (min) | 208.5 ± 7.439 | 170.7 ± 2.776 | 2.307 |
0.0212
|
Blood loss (ml) | 916.2 ± 72.66 | 696.5 ± 12.79 | 2.886 |
0.0040
|
Operative incision (cm) | 13.38 ± 0.8340 | 11.93 ± 0.2319 | 1.061 | 0.2889 |
drainage tube (root) | 1.538 ± 0.1385 | 1.394 ± 0.0306 | 0.7985 | 0.4248 |
Time of draining (day) | 3.808 ± 0.3283 | 2.146 ± 0.05885 | 4.745 |
<0.0001
|
Capacity draining (ml) | 440.0 ± 45.92 | 236.7 ± 8.072 | 4.230 |
<0.0001
|
Risk factors | ASSI (n = 26) | Non-ASSI (n = 897) |
χ
2
|
p
| |
---|---|---|---|---|---|
Sex | Male | 20 | 550 | 2.606 | 0.106 |
Female | 6 | 347 | |||
Drink wine | Yes | 19 | 550 | 1.478 | 0.224 |
No | 7 | 347 | |||
Academic career | ≤High school | 24 | 770 | 0.897 | 0.349 |
>High school | 2 | 127 | |||
Diabetes mellitus | Yes | 17 | 382 | 5.351 |
0.021
|
No | 9 | 515 | |||
COPD | Yes | 10 | 563 | 6.340 |
0.012
|
No | 16 | 334 | |||
Osteoporosis | Yes | 19 | 476 | 4.069 |
0.044
|
No | 7 | 421 | |||
Preopreative antibiotics | Yes | 19 | 456 | 5.004 |
0.025
|
No | 7 | 441 | |||
Type of disease | Fracture | 15 | 308 | 6.059 |
0.014
|
Others | 11 | 589 | |||
Operative type | Open | 23 | 621 | 4.431 |
0.035
|
Others | 3 | 276 | |||
Long-term use of hormone | Yes | 6 | 98 | 3.732 | 0.053 |
No | 20 | 799 | |||
Intraoperative blood transfusion | Yes | 5 | 206 | 0.614 | 0.433 |
No | 21 | 567 | |||
Nutritional status | Good | 19 | 687 | 0.173 | 0.667 |
Poor | 7 | 210 | |||
Hypertension | Yes | 4 | 245 | 1.825 | 0.177 |
No | 22 | 652 |
Risk factors | Exp (B) (95% C.I. of Exp (B)) |
p
| |
---|---|---|---|
Patient-related risk factors | Age (year) | 0.729(0.544–0.976) | 0.34 |
Sex | 0.000(0.000–2.294) | 0.074 | |
BMI (kg/m2) | 2.888(1.059–7.875) |
0.038
| |
Smoking (year) | 1.684(1.008–2.813) |
0.047
| |
Drink wine | 2.180(0.241–9.771) | 0.121 | |
Academic career | 3.337(0.012–9.383) | 0.265 | |
Diabetes mellitus | 2.200(0.046–1.102) |
0.020
| |
COPD | 0.000 | 0.987 | |
Osteoporosis | 1.842(0.151–4.836) |
0.044
| |
Nutritional status | 0.000(0.000–162.412) | 0.220 | |
Fracture | 2.916(0.156–5.308) |
0.001
| |
Hypertension | 0.011(0.00–13.221) | 0.213 | |
Long-term use of hormone | 0.551(0.151–4.836) | 0.105 | |
Procedure-related risk factors | Preoperative antibiotics | 2.030(0.005–5.216) |
0.025
|
Operative type | 1.374(0.010–4.445) |
0.035
| |
Operative incision (cm) | 1.027(0.555–1.899) | 0.993 | |
Operative time (min) | 1.014(0.987–1.042) |
0.030
| |
Blood loss (ml) | 1.022(0.999–1.045) |
0.024
| |
Number of internal fixation metals (piece) | 22.589(0.891–572.990) | 0.059 | |
Intraoperative blood transfusion | 0.000(0.000–0.417) | 0.413 | |
Drainage tube (root) | 0.019(0.000–11.327) | 0.225 | |
Time of draining (day) | 4.983(1.641–15.140) |
0.033
| |
Capacity draining (ml) | 1.008(0.990–1.025) | 0.392 |