Table 2
Summary of NDI scores
ACDF (
n
= 10)
*
CDA (
n
= 18)
*
P
-value
Preoperation NDI
29.0 ± 7.7
27.8 ± 6.5
0.66
12 months
9.4 ± 8.6
13.1 ± 11.4
0.52
24 months
7.9 ± 6.7
14.2 ± 11.3
0.09
↵
*
Values given as mean ± standard deviation.