Validation of the Headache Impact Test (HIT-6) in patients with chronic migraine.

ABSTRACT:

Background

The Headache Impact Test (HIT)-6 was developed and has been validated in patients with various types of headache. The objective of this study was to report the psychometric properties of the HIT-6 among patients with chronic migraine.

Methods

Data came from two international, multicenter, randomized, double-blind, placebo-controlled clinical trials of chronic migraine patients (N = 1,384) undergoing prophylaxis therapy. Confirmatory factor analysis and differential item functioning (DIF) analysis were used to test the latent structure and cross-cultural comparability of the HIT-6. Reliability, construct validity, and responsiveness were assessed. Two sets of criterion groups were used: (1) 28-day headache frequency: <10, 10-14, and ≥15 days; (2) sample quartiles o

SUBMITTER: Rendas-Baum R 

PROVIDER: S-EPMC4243819 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature