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[Evaluation study of the chronic headache questionnaire]
E Muñoz-Farjas1, F Morales, E Bernal
1Unidad de Cefaleas, Servicio de Neurología, Hospital Clínico Universitario de Zaragoza, España.
Revista De Neurologia
|May 20, 1998
Summary
The ZZA questionnaire showed limited effectiveness in distinguishing between transformed migraine and chronic tension headache. Only three questions demonstrated some validity, with two potentially aiding transformed migraine diagnosis.
Area of Science:
- Neurology
- Clinical Diagnostics
Context:
- Chronic headache diagnosis relies on semi-structured questionnaires.
- No validated tools exist for differentiating common chronic headache types.
Purpose:
- To assess the validity and effectiveness of the ZZA questionnaire.
- To differentiate between transformed migraine (TM) and chronic tension headache (CTH).
Summary:
- A 20-question ZZA questionnaire was evaluated in a specialist neurology clinic.
- Reliability analysis identified ZZA1, ZZA15, and ZZA18 as predictive for TM.
- The questionnaire was not effective for differential diagnosis between TM and CTH.
Impact:
- The ZZA questionnaire demonstrated limited utility in differentiating TM from CTH.
- Three questions showed some validity, with two potentially contributing to TM diagnostic criteria.