Table 4

Correlation between clinical status and cervical alignment.

Postoperative Clinical Status
	NDI		Cervical VAS		Radicular VAS
	C ^{^a}	P	C ^{^a}	P	C ^{^a}	P
cCobb	0.049	0.66	−0.15	0.16	−0.062	0.58
T1s	−0.098	0.38	−0.056	0.62	0.02	0.98
C0-C2	0.08	0.67	−0.005	0.9	−0.022	0.84
sCobb	0.06	0.56	−0.054	0.634	−0.036	0.75
HCA	−0.122	0.28	0.045	0.69	0.032	0.78
cSVA	−0.059	0.6	−0.29	0.009	−0.18	0.11

Clinical Status on Last Follow-Up Evaluation
	NDI		Cervical VAS		Radicular VAS
	C ^{^a}	P	C ^{^a}	P	C ^{^a}	P
cCobb	0.16	0.147	0.06	0.54	0.11	0.31
T1s	−0.16	0.156	−0.1	0.33	−0.06	0.55
C0-C2	0.011	0.92	−0.11	0.3	−0.25	0.02
sCobb	0.184	0.1	−0.04	0.69	0.096	0.4
HCA	−0.09	0.4	0.045	0.69	0.038	0.73
cSVA	0.035	0.75	−0.12	0.26	−0.068	0.54

Abbreviations: C0-C2, C0-C2 angle; cCobb, C2-C7 Cobb’s angle; cSVA, cervical sagittal vertical axis; HCA, Harrison cervical angle; NDI, Neck Disability Index; sCobb, cervical segmental Cobb angle; T1s, T1 slope; VAS, visual analog scale.
↵a Pearson’s correlation coefficient.
↵b Mean value.
↵c t Test for independent samples.