Langeveld, J.H.

headache subject migraine study qlh-y adolescent domain scale quality stress subscale health questionnaire effect patient headache activity children score satisfaction activity measurement ql domains status hoofdpijn school symptom research measure diary impact instrument change chapter ql domain correlation 0.000 factor group validity reliability treatment migraine patients index analogue control population level affectivity relation headache subjects student interaction depression disease qlh-y subscales number analyses no-migraine passchier attack analogue scales vas scales adult evaluation result analogue scale satisfaction assessment livskvalitet future intensity variance journal parent report headache diary sample 0.00 psychometric health status table