Open AccessOptimizing DyNaChron instrument for assessing chronic nasal dysfunction symptoms by Rasch analysis
Author(s) -
Christine Rotonda,
Marc Soudant,
Jonathan Epstein,
Christophe Goetz,
R. Jankowski,
Françis Guillemin
Publication year - 2019
Publication title -
rhinology (amsterdam. online)/rhinology
Language(s) - English
Resource type - Journals
eISSN - 1996-8604
pISSN - 0300-0729
DOI - 10.4193/rhin19.201
Subject(s) - rasch model , differential item functioning , medicine , polytomous rasch model , psychometrics , item analysis , item response theory , quality of life (healthcare) , physical therapy , clinical psychology , psychology , developmental psychology , nursing
The DyNaChron (Dysfonctionnement Nasal Chronique) questionnaire is a self-reporting 78-item instrument assessing six symptoms and their consequences of chronic nasal dysfunction. Patients complete items of a symptom domain only when it is present but in case the patient presents several or all symptoms, its length can limit its use. Here, we aimed to optimize, or shorten, the DyNaChron for clinical use.