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. 2013 Dec 1;7:e58–e66. doi: 10.1016/j.ijsp.2013.05.001

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.