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

Table 2 Descriptive statistics for test scores of the study measures (values from the original study of HMSE [9] in square brackets [ ])

Measure	Mean (SD)	Range	No. of patients^a
HMSE	91.7 (25.1) [110.3 (20.9)]	32–154 [48–163]	133
HSLC
Internal	34.2 (9.9) [36.4 (8.0)]	11–55 [11–52]	135
Chance	35.0 (8.9) [30.9 (8.1)]	15–68 [13–51]	133
Professional	28.4 (7.0) [28.9 (6.2)]	11–46 [11–47]	133
Headache frequency (days/month)	20	2–30
Medication use (DDD/month)	30	0–220
BDI	8.7 (6.9) [9.1 (7.0)]	0–31 [0–35]	133
BAI	8.0 (7.9)	0–32	122
GSI (SCL-90-R)	0.58 (0.47)	0.03–2.17	135
SF-36
PCS	40.4 (9.4)	12–58	135
PF	80.3 (21.0)	0–100	135
GH	56.7 (21.8)	0–100	135
MCS	48.4 (9.1)	19–64	135
SF	70.5 (23.9)	13–100	135

HSLC Headache-Specific Locus of Control Scale, HMSE Headache Management Self-Efficacy Scale, DDD defined daily doses, BDI Beck’s depression inventory, BAI Beck’s anxiety inventory, GSI global severity index, PCS physical component score, PF physical function, GH general health, MCS mental component score, SF social functioning
^aThe number of patients included in the calculations varies due to missing values

ISSN: 1129-2377