Subsidence following cervical discectomy and implant-to-bone ratio

Table 1 Association between type of implant and subsidence rate at 12 months post-surgery

Type of implant	Subsidence		χ² (df)	p
Type of implant	Yes n (%)^a	No n (%)^a	χ² (df)	p
Titanium-coated PEEK	14 (40)	54 (41)	0.017 (1)	0.8962
PEEK	21 (60)	77 (59)	0.017 (1)	0.8962

Key to abbreviations and symbols:
^acolumn percentages;
Χ² value of the statistic of the Chi2 test for independence, df Degrees of freedom, p Two-tailed test probability for Chi2 test statistics;

ISSN: 1471-2474