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Table 2 The differences of risk factors in the infection and non-infection groups were analyzed by Chi-square test (count data)

From: Risk factors for acute surgical site infections after lumbar surgery: a retrospective study

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
  1. Italicized value is statistically different