Table 1 Information of the patients

No. of patients (n)

17

20

Male/female (n)

06/11

10/10

Mean age (years)

40.71 ± 17.04

59.18 ± 13.71

Hospital stay (days)

23.50 ± 9.54

23.10 ± 10.04

Surgery time (min)

177.39 ± 39.29

231.70 ± 65.31

Hospitalization cost

74,881 ± 34,374

78,339 ± 25,327

Blood loss (ml)

400.00 ± 357.3

532.40 ± 303.60

Drainage time (days)

6.21 ± 0.90

7.12. ± 0.85

Mean fusion time (months)

11.30 ± 4.75

6.80 ± 1.50

Fever

12/17

12/20

Antibiotic therapy time before surgery (days)

17.62 ± 3.76

13.86 ± 4.71

Affected levels

 L1–2

4

3

 L2–3

1

2

 L3–4

1

2

 L4–5

8

9

 L5–S1

3

4