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German Translation and Validation of the Standardized Cosmesis and Health Nasal Outcomes Survey Questionnaire
Sebastian Haack1, Mikhail Saltychev2, Sam P Most3
1Marienhospital Stuttgart, Teaching Hospital of Eberhard Karls University Tübingen, Department of Facial Plastic Surgery, Baden-Württemberg, Germany, Stuttgart.
Introduction:
The Standardized Cosmesis and Health Nasal Outcomes Survey (SCHNOS) is a validated patient-reported outcome measure assessing both functional and cosmetic aspects of rhinoplasty. Despite widespread use, no validated German version has been available to date.
Objective And Hypothesis:
To translate and validate the German version of the questionnaire.
Study Design:
Prospective case-control study.
Methods:
This study followed international translation guidelines including forward and backward translation, patient interviews (n = 10), and a validation study involving 25 rhinoplasty patients and 25 healthy controls. Internal consistency, test-retest reliability, and construct validity were evaluated.
Results:
The German SCHNOS demonstrated excellent internal consistency (Cronbach's α: 0.95 for SCHNOS-O, 0.94 for SCHNOS-C). Test-retest reliability was very strong. Exploratory factor analysis confirmed unidimensionality of both domains.
Conclusion:
The German SCHNOS is a valid and reproducible tool for evaluating rhinoplasty outcomes. It facilitates standardized assessment of functional and aesthetic results to be used in clinical practice and research within German-speaking populations.
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