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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