Dutch Translation and Validation of the Headache-Specific Locus of Control Scale (HSLC-DV)

Table 5

Structural validity: factor loadings on the purported subscales of the HSLC-DV scale.

		Internal LoC eigenvalue = 6.8	External LoC eigenvalue = 4.3	Chance LoC eigenvalue = 2.4
External LoC	HSLC6	0.168	0.100	0.228
	HSLC8	0.190	0.512	0.229
	HSLC10	0.230	0.687	−0.080
	HSLC12	0.056	0.336	0.118
	HSLC14	−0.108	0.643	0.153
	HSLC15	−0.093	0.356	0.145
	HSLC16	−0.112	0.720	0.028
	HSLC22	0.220	0.619	−0.134
	HSLC24	−0.052	0.639	0.188
	HSLC27	0.030	0.534	0.037
	HSLC30	0.062	0.702	0.057
Internal LoC	HSLC2	0.660	−0.013	−0.123
	HSLC4	0.596	0.037	−0.157
	HSLC5	0.699	0.000	−0.195
	HSLC7	0.638	0.147	0.023
	HSLC11	0.729	−0.012	−0.076
	HSLC17	0.796	0.061	−0.216
	HSLC19	0.845	0.054	0.037
	HSLC21	0.600	0.084	−0.353
	HSLC26	0.429	−0.067	−0.281
	HSLC28	0.742	−0.041	−0.083
	HSLC32	0.618	0.019	−0.201
Chance LoC	HSLC1	−0.224	−0.148	0.650
	HSLC3	−0.205	−0.217	0.707
	HSLC9	−0.249	0.019	0.568
	HSLC13	−0.142	0.122	0.650
	HSLC18	0.479	0.114	0.096
	HSLC20	0.041	0.162	0.423
	HSLC23	−0.020	0.186	0.694
	HSLC25	−0.129	0.271	0.674
	HSLC29	−0.032	−0.223	0.088
	HSLC31	−0.130	0.163	0.484
	HSLC33	−0.276	−0.181	0.415

Three factors explained 41% of the total variance in HSLC-DV scores. Cross-loadings or items that do not load (<0.40) on the purported subscale.