The Journal of Headache and Pain

Table 4 Collinearity diagnosis of various model variables

From: Development and validation of non-invasive prediction models for migraine in Chinese adults

Variable	VIF^*
Variable	Model1	Model 2	Model 3	Model4	Model5	Model6	Model7	Model8
PSQI score	1	1.09	1.09	1.1	1.2	1.2	1.22	1.39
SAS score	——	——	——	——	——	——	——	2.53
SDS score	——	——	——	——	——	——	1.9	2.48
Qi-deficient score	——	——	——	——	1.85	1.86	2	2.02
Phlegm-dampness score	——	——	——	1.46	1.34	1.55	1.55	1.56
Blood-stasis score	——	——	——	1.67	——	1.73	1.73	1.73
Qi-depressed score	——	1.09	1.17	1.48	1.56	1.7	2.01	2.07
Inherited special score	——	——	1.08	——	1.21	1.23	1.25	1.25

^*VIF was used to evaluate the multicollinearity of model variables. When VIF > 5, it indicates that there was Multicollinearity, and when VIF < 5, there was no Multicollinearity. VIF Variance inflation factor, PSQI Pittsburgh sleep quality index, SAS Self-rating anxiety scale, SDS Self-rating depression scale

Back to article page

ISSN: 1129-2377

Contact us

Submission enquiries: journalsubmissions@springernature.com