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Table 1 Demographic characteristics and surgery-related factors of the patients

From: Risk factors for predicting symptomatic adjacent segment degeneration requiring surgery in patients after posterior lumbar fusion

Characteristics

Patients with SASDS

Pvalues

Yes (n = 28)

No (n = 56)

Age (years)

61.4 ± 12.0

62.1 ± 10.3

0.767

Sex, n (%)

  

0.516

Male

11 (39.3)

18 (32.1)

 

Female

17 (60.7)

38 (67.9)

 

BMI (kg/m2)

27.9 ± 2.3

25.2 ± 3.3

0.000

Smoker within past year, n (%)

  

0.259

Yes

8 (28.6)

10 (17.9)

 

No

20 (71.4)

46 (82.1)

 

Diagnosis, n (%)

  

0.446

 Disc herniation

3 (10.7)

12 (21.4)

 

 Lumbar spondylolisthesis

3 (10.7)

4 (7.1)

 

 Lumbar stenosis

22 (78.6)

40 (71.4)

 

No. of levels fused

1.50 ± 0.69

1.57 ± 0.63

0.637

Fusion method, n (%)

  

0.577

PLF

25 (89.3)

52 (92.9)

 

PLIF

3 (10.7)

4 (7.1)

 

Allograft, n (%)

  

0.271

Yes

19 (67.9)

31 (55.4)

 

No

9 (32.1)

25 (44.6)

 
  1. Note: SASDS symptomatic adjacent segment degeneration surgery, ASD adjacent segment degeneration, BMI body mass index, PLIF posterior lumbar interbody fusion, PLF posterior lumbar fusion.