Effect of facet joint distraction on the functional and radiological outcomes after anterior cervical disc replacement

Table 2 Pearson correlation coefficients and p values

	Age	BMI	Operation Time	ΔC2-C7 angle	ΔC7S	ΔC2-C7 ROM	ΔVAS	ΔNDI	DID	DFJD
Age	×	0.225	0.006	0.068	-0.029	-0.148	-0.171	0.091	-0.036	0.073
BMI		×	-0.069	-0.178	-0.223	-0.143	0.091	0.070	0.003	-0.241^a
Operation Time			×	0.120	-0.084	-0.224	-0.205	-0.187	0.120	0.190
ΔC2-C7 angle				×	0.487^b	0.298^a	0.218	0.100	0.278^a	-0.016
ΔC7S					×	0.390^b	0.205	0.148	0.098	-0.075
ΔC2-C7 ROM						×	0.214	0.076	0.046	-0.030
ΔVAS							×	0.308^b	0.017	-0.534^b
ΔNDI								×	0.120	-0.380^b
DID									×	0.224
DFJD										×

BMI, body mass index; C7S, C7 slope; ROM, range of motion; VAS, visual analog scale; NDI, neck disability index; DID, degree of Intervertebral Distraction; DFJD, degree of Facet Joint Distraction
^aCorrelation is significant at the 0.05 level (2-tailed)
^bCorrelation is significant at the 0.01 level (2-tailed)

ISSN: 1471-2474