Abstract
In recent years, questionnaires were published in English to assess the quality of life of patients with PCD (Primary Ciliary Diskinesia) for adults, adolescents aged 13-17 years, and children aged 6-12 years and their caregivers. This study aimed to prepare Polish versions of the questionnaires and validate them in specific age groups with the participation of Polish patients with PCD. The individual questionnaires were translated and discussed with the involvement of the creator of the original questionnaire in English. Patients completed the questionnaires according to their affiliation with one of the groups. Validation was based on internal consistency analysis (Cronbach's alpha coefficient and split-half reliability) and test-retest reliability (intraclass correlation coefficient-ICC). The internal consistency of all questionnaires was from moderate to very good (Cronbach's alpha 0.67-0.91, split-half reliability 0.53-0.95). The consistency of the measurements showed excellent repeatability (ICC 0.67-0.91). The surveyed Polish PCD patients rated their quality of life quite well (63-77%). QOL questionnaires for patients with PCD can be used routinely during each medical check-up as a simple tool to provide the doctor with an indication of the effectiveness of treatment and the impact of the disease on the patient's quality of life.
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