. 2007 Dec 13;17(3):406–414. doi: 10.1007/s00586-007-0560-2

Table 3.

Outcome regressors according to variable influence on projection (VIP) coefficients (principal component 1) according to short-term and long-term prediction. VIP > 1.0 were regarded as significant

Short-term		Long-term
Variable	VIP	Variable	VIP
NDI^a, baseline	1.77	NDI, short-term	2.06
Horizontal AROM^b, baseline	1.57	Pain intensity, short-term	1.91
Pain intensity, baseline	1.48	NDI, baseline	1.76
Smoking, baseline	1.41	Pain intensity, baseline	1.31
Hand strength, right, baseline	1.40	Smoking, baseline	1.16
Sex	1.27	Sagittal AROM, baseline	1.06
Preoperative kyphosis/lordosis	1.07	Horizontal AROM, baseline	1.04
		Sex	1.02
		Hand strength, right, baseline	1.02

^aNeck Disability Index

^bActive range of motion