Validation of the Headache Impact Test (HIT-6™) across episodic and chronic migraine

Abstract

Objective: The purpose of this study was to assess psychometric properties of the six-item Headache Impact Text (HIT-6™) across episodic and chronic migraine.Methods: Using a migraine screener and number of headache days per month (HDPM), participants from the National Survey of Headache Impact (NSHI) study and the HIT-6 validation study (HIT6-V) were selected for this study. Eligible participants were categorized into three groups: chronic migraine (CM: ≥ 15 HDPM); episodic migraine (EM: < 15 HDPM); non-migraine headaches. Reliability and validity of the HIT-6 were evaluated.Results: A total of 2,049 survey participants met the inclusion/exclusion criteria for this study. Participants were identified as 6.4% CM; 42.1% EM; 51.5% non-migraine, with respective mean HIT-6 scores: 62.5 ± 7.8; 60.2 ± 6.8; and 49.1 ± 8.7. High reliability was demonstrated with internal consistency (time1/time2) of 0.83/0.87 in NSHI, and 0.82/0.92 in HIT6-V. Intra-class correlation for test-retest reliability was very good at 0.77. HIT-6 scores correlated significantly (p < .0001) with total Migraine Disability Assessment Scale scores (r = 0.56), headache pain severity (r = 0.46), and HDPM (r = 0.29). Discriminant validity analysis showed significantly different HIT-6 scores (F = 488.02, p < .0001) across the groups.Conclusion: Results from these analyses confirm that the HIT-6 is a reliable and valid tool for discriminating headache impact across episodic and chronic migraine.

Prevalence and Impact on Job Performance of Primary Headache Among Medical and Paramedical Staff in the Emergency Department

“…The second part includes questions about the characteristics of headache. The third part assesses the impact of headache on job performance by using headache impact test (HIT-6) [9]. The score of HIT-6 shows the burden of headache on normal daily life and job performance as the following.…”

Prevalence and Impact on Job Performance of Primary Headache Among Medical and Paramedical Staff in the Emergency Departments of Taif Hospitals - Saudi Arabia.

“…The second part included questions about the characteristics of headache. The Third partassessed theimpact of headache on job performance by using Headache Impact Test (HIT-6) [9] .The score of (HIT-6) shows the burden of headache on normal daily life and job performance as the following: All medical and paramedical staff those work in emergency department, over 18 years old and either male or female were included in the study. The health care providers those suffered from headache due to secondary causes were excluded.…”

Migraine and Life Quality: A West African Survey

“…Finally, 2 questions to assess the frequency and the intensity of the headache. Stewart WF [9]. The findings are expressed in grade: The HIT-6 (Headache Impact Test), validated in french, is a fast measurement scale of disability related to migraine [8,10].…”