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BACKGROUND Electronic implementation of questionnaires has many advantages, but there may be concerns that it alters versions that were validated on paper. OBJECTIVE To determine whether electronic implementation alters responses to the SF-36 and asthma quality of life questionnaire (AQLQ), compared to paper implementation. METHODS Patients with asthma(More)
OBJECTIVE Health-related quality of life is an important measure in evaluations of the management of childhood asthma. In this study, we assessed psychometric properties, responsiveness, and longitudinal and cross-sectional construct validity of the Dutch version of the 23-item Pediatric Asthma Quality of Life Questionnaire (PAQLQ). METHODS The study(More)
This study compared results from Internet and written questionnaires about respiratory symptoms in order to find out if both forms of the survey yielded the same answers. One thousand seventy-one students, ages 13 to 17, were asked to complete either an Internet or a written questionnaire. The demographic characteristics of the participants equalled those(More)
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