Table 3

Regression analysis comparing correction of cervical lordosis and health-related quality-of-life outcomes.

Outcome Measure	β Coefficient	95% CI	P Value^a
Physical component of short form-12
Maintained : restored	−1.5	(−5.8, 2.7)	0.19
Restored : kyphotic	8.6	(3.9, 13.3)	0.03
Maintained : kyphotic	4.2	(−0.7, 9.1)	0.17
Mental component of short form-12
Maintained : restored	1.1	(−2.9, 5.0)	0.50
Restored : kyphotic	−3.2	(−9.7, 3.4)	0.54
Maintained : kyphotic	−2.2	(−8.5, 3.9)	0.76
Neck Disability Index
Maintained : restored	1.7	(−8.6, 5.2)	0.71
Restored : kyphotic	5.6	(−5.8, 17.2)	0.82
Maintained : kyphotic	7.6	(−3.2, 18.5)	0.62
VAS arm
Maintained : restored	1.9	(−0.1, 2.9)	0.27
Restored : kyphotic	−2.0	(−3.7, −0.4)	0.03
Maintained : kyphotic	−1.2	(−2.7, 0.4)	0.11
VAS neck
Maintained : restored	0.3	(−1.4, 1.9)	0.22
Restored : kyphotic	−0.5	(−1.5, 0.5)	0.12
Maintained : kyphotic	−0.8	(−2.3, 0.8)	0.33

Abbreviation: VAS, visual analog scale.
Note: Significance achieved at P < 0.05.
^aRegression analysis controlled for age, body mass index, Charlson Comorbidity Index, and preoperative diagnosis.