Impact of Age and Duration of Symptoms on Surgical Outcome of Single-Level Microscopic Anterior Cervical Discectomy and Fusion in the Patients with Cervical Spondylotic Radiculopathy

Table 2

Role of duration of symptoms and age in surgical outcome of ACDF.

Index	Number	Preoperative		Improvement in last followup
		NDI	VAS	NDI	VAS
Duration of symptoms
<6 months	48	21.8 ± 6.9	7.0 ± 1.8	13.0 ± 5.3	4.2 ± 2.0
>6 months	20	23.2 ± 4.2	6.2 ± 1.4	14.6 ± 9.6	2.7 ± 3.1
value	—	0.536	0.110	0.865	0.101
Patients’ age
<45 years old	32	19.5 ± 5.2	6.0 ± 1.8	10.1 ± 9.5	3.1 ± 2.7
>45 years old	36	24.6 ± 6.1	7.4 ± 1.3	15.8 ± 4.6	4.3 ± 2.0
value	—	0.204	0.09	0.032*	0.130

NDI: Neck Disability Index.
VAS: Visual Analogue Scale.
*Significant statistically.