Sino-Nasal Outcome Test-22: Cross-cultural Adaptation, and Validation in Russian Speaking Patients.

Background Chronic rhinosinusitis (CRS) is a relatively common disease, which significantly affects the patient's quality of life (QoL). Sino-Nasal Outcome Test-22 (SNOT-22) is a QoL questionnaire, which allows quantifying patients' complaints. Our aim was to translate and validated the SNOT-22 into the Russian language. Methods Translation and validation of SNOT-22 questionnaire was performed through forward-backward translation technique. After proper translation, the translated questionnaire was completed by CRS patients before and after endoscopic sinus surgery (ESS) and by healthy individuals as controls. Results Thirty-four native Russian-speaking CRS patients completed the Russian version of the SNOT-22 questionnaire before and after ESS. The internal consistency for reliability assessment was very good (mean Cronbach's alpha = 0.816 for CRS patients). Mean scores for the preoperative, postoperative and control groups were 67.6, 18.1 and 9.2, respectively (P < .001), showing validity and responsiveness of the questionnaire. Conclusion The Russian version of the SNOT-22 questionnaire is a valid outcome measure for patients with CRS.