Cross-cultural adaptation and validation of the Turkish version of the sinus and nasal quality of life survey (SN-5)

Abstract

OBJECTIVE: The Sinus and Nasal Quality of Life (QoL) Survey (SN-5) is a valid questionnaire that evaluates the QoL of the pediatric population associated with sinonasal diseases and symptoms. The aims of this study were to translate the SN-5 test to Turkish language (SN-5t), evaluate the internal consistency of the test and test-retest reliability and validate the translation for further use in studies in Turkish language. METHODS: In this prospective study, 50 healthy subjects and 50 patients, age between 2 and 12, with sinonasal symptoms prolonged over 1 month were included to the study. Families of healthy subjects were asked to fill the SN-5t twice with 1-week interval. The patient group completed test once prior the treatment and once 4 weeks after the treatment. Cronbach’s test was performed to test internal consistency and Spearman’s test was performed to evaluate test-retest validity. RESULTS: The median value of the pre-treatment tests of the patient group and control group was 25 (23–28) and 14.25 (12–16), respectively. A statistically significant difference was found between groups (p