Table 1 Characteristics of the patient cohort in two groups

Number of patients

60

52

Age (years)

57.9 ± 7.7 (41–73)

56.9 ± 7.5

(42–72)

0.529

Gender, males/females

39/21

35/17

0.799

Weight (kg)

67.2 ± 8.2

66.3 ± 8.9

0.581

Height (cm)

167.9 ± 6.5

168.8 ± 6.5

0.472

BMI (kg/m²)

23.8 ± 2.0

23.2 ± 2.1

0.134

Diagnosis

0.775

 LDH

26

32

 LSS

17

16

 LDS

9

12

Operation level

0.790

 L3/4

6

5

 L4/5

25

32

 L5/S1

21

23

Operation time (min)

103.1 ± 15.2

106.5 ± 17.1

0.260

Intraoperative blood loss (ml)

250.6 ± 38.6

258.1 ± 39.7

0.314

Incision length (cm)

6.2 ± 0.7

6.1 ± 0.8

0.299

Postoperative hospital duration (day)

6.9 ± 0.9

7.4 ± 0.9

0.015