Translation and validation of the short version of the Questionnaire of Olfactory Disorders-Negative Statements to Spanish.

Chiesa-Estomba, Carlos M; Lechien, Jerome R; Calvo-Henríquez, Christian; Mayo, Miguel; Maldonado, Byron; Maza, Juan; Tucciarone, Manuel; Villareal, Ithzel; Vaira, Luigi Angelo; Izquierdo-Dominguez, Adriana; Alobid, Isam

INTRODUCTION There are more than 400 million of native Spanish speakers around the world, being the second most spoken language in regard to the number of native speakers. For this reason, a valid questionnaire to access the olfaction of our patients is necessary. MATERIAL AND METHODS Validation and cross-cultural adaptation of the svQOD-NS questionnaire to the Spanish language. Internal consistency of svQOD-NS measured with Cronbach α. RESULTS 40 patients met the inclusion criteria. 41 ± 153 (range 21-82), and 32 (80%) were female. 20 patients (57,1%) were male and 15 (42,9%) were female. There was a normal distribution among patients included according to the Shapiro-Wilk test (p = 0.175). Internal consistency of svQOD-NS measured with Cronbach α was 0.861. The intraclass correlation coefficient was 0.849 (confidence interval [CI] 95%: 0.766-0.911). CONCLUSION The Spanish Language is the second most spoken language with regard to the number of native speakers and the svQOD-NS translation represents a valid option for the Spanish-speaking medical community, from which a large number of patients can benefit.