Table 3.

Loading scores (component coefficients) for variables and components as derived from principal component analysis

Variables	Component 1	Component 2
McGill sensory	0.830	0.040
McGill affective	0.778	0.139
McGill VAS	0.901	0.027
McGill PPI	0.713	0.087
STAI	0.021	0.871
BDI	0.334	0.847
PRWHE	0.886	0.125
EPQR‐N	0.231	0.862

A loading score represents the strength of the correlation between a certain variable to the principal component (range 0–1.0). BDI, Beck depression inventory; PRWHE, patient‐rated wrist and hand evaluation; MPQ, McGill pain questionnaire (11 sensory, four affective items), one item on present pain intensity (PPI) and 1‐item visual analogue scale (VAS); STAI, Spielberger state‐trait anxiety inventory; EPQR‐N, revised Eysenck personality questionnaire, neuroticism levels.