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Table 1 Demographics of the groups

From: Comparison between posterior dynamic stabilization and posterior lumbar interbody fusion in the treatment of degenerative disc disease: a prospective cohort study

Characteristics

Dynesys group (n = 95)

PLIF group (n = 81)

p

Age (years)a

47.3 ± 12.9

52.9 ± 11.2

0.002

Sex

  

0.569

Male

51

40

 

Female

44

41

 

BMI (kg/m2)a

26.9 ± 3.9

22.9 ± 3.3

<0.001

Comorbid medical conditions

  

0.136

Yes

12

17

 

No

83

64

 

Implanted level, n (%)

  

0.158

L2–L5

1 (1.1)

2 (2.5)

 

L3–L4

5 (5.3)

4 (4.9)

 

L3–L5

7 (7.4)

5 (6.2)

 

L4–L5

45 (47.4)

47 (58.0)

 

L4–S1

10 (10.5)

13 (16.0)

 

L5–S1

27 (28.4)

10 (12.3)

 
  1. Comorbid medical conditions include cardiovascular disorders, respiratory diseases, digestive system disorders, diabetes mellitus, renal insufficiency
  2. BMI body mass index
  3. aData are displayed as mean ± SD