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Table 1 The difference between the NFSD group and disease-free group using t test

From: Risk factors for non-fusion segment disease after anterior cervical spondylosis surgery: a retrospective study with long-term follow-up of 171 patients

 

NFSD group(n = 16)

Disease-free group(n = 155)

P value

Age at operation (years)

51.06 ± 7.15

50.56 ± 9.92

0.844

Preoperative alignment (degrees)

7.75 ± 3.44

9.32 ± 3.79

0.113

Postoperative alignment(degrees)*

8.38 ± 4.57

17.30 ± 4.43

0.000

Pavlov’s ratio (C5)

0.84 ± 0.08

0.83 ± 0.09

0.597

Number of levels fused*

1.69 ± 0.79

2.26 ± 0.77

0.005

Scores of disc degeneration in non-fusion segments*

2.25 ± 1.13

1.52 ± 0.94

0.004

  1. Note: * for the difference was statistically significant (P < 0.05)