The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 4 Comparison between preoperative NDI and at different follow-up intervals among ACDF group

From: Single level anterior cervical discectomy and fusion versus dynamic cervical implant: clinical and radiological outcome

	Mean	± SD
Pre NDI	54.20	10.90
Post NDI 1 month	29.27	5.63
Post NDI 3 months	25.33	4.35
Post NDI 12 months	23.93	3.49

Repeated measure ANOVAs. Pre vs 1 month (HS), pre vs 3 months (HS), pre vs 12 months (HS), 1 month vs 3 months (HS), 1 month vs 12 months (HS), 3 months vs. 12 months (NS), using Post Hoc test
NDI Neck disability index, SD Standard deviation, HS Highly significant, NS Non-significant

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