The improved bioactive n-HA/PA66 cage versus the PEEK cage in anterior cervical fusion: results from a 6-year follow-up and a case-matched study

Table 1 The demographic and clinical data in the two groups

Variables	nHA/PA66 group(n = 58)	PEEK group(n = 58)	P
Age	51.9 ± 9.6	52.4 ± 9.9	0.790
Male/Female	34/24	36/22	0.704
Smoker	15	14	0.830
Drinker	11	10	0.809
Follow-up	87.4 ± 8.2	86.7 ± 7.8	0.626
Clinical presentation
Radiculopathy	21	21
Myelopathy	18	18
Radiculomyelopathy	19	19
Segment
C3–4	8	8
C4–5	12	12
C5–6	20	20
C6–7	18	18

ISSN: 1471-2474