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Table 1 Patient demographics (superior and inferior group)

From: A study on the clinical outcomes of patients with revision surgery for adjacent segment disease after 10-year’s anterior cervical spine surgery

Demographics

Superior group

Inferior group

P value

Age (year)

53.6 ± 5.7

56.5 ± 7.8

0.861

Sex

  

0.922

Men

11

8

 

Women

9

7

 

Primary fused level

 

0.124

 C4–5(7)

7

6

 

 C5–6(18)

15

12

 

 C6–7(10)

9

1

 

Duration of symptoms (months)

15.3 ± 3.8

16.9 ± 6.1

0.532

Follow-up (months)

25.6 ± 5.2

27.7 ± 3.8

0.317