Psoriasis Clinical Trial
Official title:
The PsoTeenQOL - Preliminary Reliability and Validity of a Health-related Quality of Life Questionnaire for Adolescents With Psoriasis
This study aims to develop and provide preliminary reliability and validity of a questionnaire to measure Health-related Quality of Life (HRQOL) in adolescents with psoriasis. To the best of our knowledge, this will be the first psoriasis-specific HRQOL instrument for use in adolescent patients. Data will be collected from a Danish population of adolescents with psoriasis (12-17 years), as well as from parents of adolescents with psoriasis, and a group of adolescents without psoriasis.
The present study will examine the psychometric properties of a preliminary 41-item version
of the PsoTeenQOL. The preliminary PsoTeenQOL has been developed based on qualitative
interviews of adolescents (12-17 years) with psoriasis, their parents, and health
professionals working within the field, as well as literature reviews and existing
questionnaires. Face and content validity has been established through subsequent cognitive
interviews with the target group.
Exploratory factor analysis (EFA) and analysis of differential item functioning (DIF) will be
used to further refine the PsoTeenQOL questionnaire by selecting the most appropriate items.
In addition, indicators of reliability (internal consistency; test-retest reliability),
validity (construct validity, criterion validity; discriminant validity), and responsiveness
will be evaluated.
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