Table 4.

Component Loadings for PCA Model in Controls who do not have TMD (n=1633)

	Component 1	Component 2	Component 3	Component
SCL 90R Depression	0.30	0.67	0.05	0.02
SCL 90R Somatization	−0.12	0.85	0.11	0.01
SCL 90R Anxiety	0.10	0.81	0.04	0.01
SCL 90R Hostility	0.08	0.74	0.01	0.00
EPQ-R Extraversion	−0.62	0.24	0.12	−0.05
EPQ-R Neuroticism	0.56	0.15	0.17	−0.01
State Anxiety Inventory	0.80	0.11	−0.10	0.00
Trait Anxiety Inventory	0.80	0.11	0.03	0.02
POMS-Bi Positive Affect	−0.87	0.13	0.12	0.06
POMS-Bi Negative Affect	0.57	0.32	−0.06	0.05
PSS Perceived Stress Scale	0.70	0.13	0.06	0.00
PILL Global Score	−0.09	0.66	0.12	0.03
Global Kohn Score	0.25	−0.17	0.46	−0.26
PCS Helplessness	−0.01	0.12	0.83	−0.05
PCS Magnification	−0.05	0.15	0.78	0.01
PCS Rumination	−0.10	0.08	0.88	−0.07
CSQ Coping Statements	−0.11	0.07	−0.01	0.79
CSQ Reinterpreting Pain	0.13	−0.03	0.02	0.72
CSQ Distraction	0.04	−0.18	0.32	0.66
CSQ Ignoring Pain	−0.03	0.12	−0.33	0.79
CSQ Praying & Hoping	0.00	−0.19	0.56	0.31
Cumulative Variance	0.19	0.35	0.49	0.61
Cronbach’s Alpha	0.87	0.86	0.54	0.74