German Translation and Validation of the Standardized Cosmesis and Health Nasal Outcomes Survey Questionnaire (SCHNOS)

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. Objectives & Hypotheses: 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 alpha: 0.95 for SCHNOS-O, 0.94 for SCHNOS-C). Test–retest reliability was very strong. Exploratory factor analysis confirmed unidimensionality of both domains. Conclusions: 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.