Table 1

Patients' characteristics

Groups

Categories

Total

No. (%)

Mean ± SD(range)


Age

101

75.3 ± 4.1 (70-86)

Under 76

57 (56.4)

76 and above

44 (43.6)

Sex

101

Male

51 (50.5)

Female

50 (49.5)

Duration of back pain * (weeks)

100

100 ± 295 (0-2020)

Duration of leg pain * (weeks)

100

92 ± 132 (0 - 624)

ASA score

101

1

7 (6.9)

2

65 (64.4)

3

28 (27.7)

4

1 (1.0)

Smoking

100

Yes

14 (14.0)

No

86 (86.0)

Body mass index

96

26.8 ± 3.1 (18.8-33.7)

< 20

1 (1.0)

20-24.9

29 (30.2)

25-29.9

50 (52.1)

30 +

16 (16.7)

Hospital stay (days)*

101

6 ± 3 (2-15)

Levels of laminectomy

100

1 level

48 (48.0)

> 1 level

52 (52.0)

Marital status

101

Cohabiting

61 (60.4)

Live alone

40 (39.6)

Educational level §

99

Lower

88 (88.9)

Higher

11 (11.1)

Indication for surgery

101

Central spinal stenosis

79 (78.2)

Lateral spinal stenosis

6 (5.9)

Combination of above

16 (15.8)

Previous back surgery

101

Yes

22 (21.8)

No

79 (78.2)


*Central tendency presented as median. § Higher educational level refer to university or similar college of higher learning. Where total of patients is not N = 101 it represents missing values. SD; standard deviation.

Jakola et al. BMC Surgery 2010 10:34   doi:10.1186/1471-2482-10-34

Open Data