Psychometric properties of the Danish versions of Headache-Specific Locus of Control Scale and Headache Management Self-Efficacy Scale

Table 3 Item correlations with scale scores and Cronbach’s α for HSLC and HMSE items (values from original studies [5, 9] in brackets)

Scale	Item means variance	Corrected item-total correlation		Cronbach’s α
Scale	Item means variance	Mean	Range	Cronbach’s α
HSLC
Health-care professional (n = 133)	0.52	0.40	0.30–0.59	0.75 (0.88)
Internal (n = 135)	0.13	0.59	0.35–0.74	0.88 (0.86)
Chance (n = 133)	0.32	0.40	0.18–0.54	0.71 (0.84)
HMSE (n = 135)	0.35	0.42 (0.49)	0.058–0.611 (0.27–0.66)	0.85 (0.90)

HSLC Headache-Specific Locus of Control Scale, HMSE Headache Management Self-Efficacy Scale

ISSN: 1129-2377