Table 1: Demographic data (N = 99).

Parameters

Mean ± SD

Min-Max

Age (years)

59.15 ± 8.78

43-65

BMI (kg/m2)

26.15 ± 2.91

19-39

Clinical variables

ODI (%)

45.43 ± 17.66

12-94

RM (points)

14.64 ± 5.40

3-24

Lumbar VAS (points)

7.15 ± 1.44

4-10

SF-36, PCS (points)

35.91 ± 16.62

16-90

SF-36, MCS (points)

48.25 ± 15.22

20-95

Surgical variables

Surgical time (min)

187.28 ± 81.62

80-480

Bleending (ml)

437.92 ± 322.18

100-1,600

BMI = body mass index.

MCS = mental component summary.

ODI = Oswestry disability index.

PCS = physical component summary.

RM = Roland Morris.

SD = standard deviation.

VAS = visual analog scale.