Association between parosmia, OD, and aetiology with relevant improvement in discrimination
The next step sought to determine associations between smell-loss related variables (see above) and relevant changes in discrimination function (defined as D improvement greater or equal 3.0 points) at follow-up visit.
Logistic regression analysis revealed that relevant improvements in discrimination function were more likely in those that had lower baseline olfactory function (aOR, 0.90; 95%CI, 0.86-0.95), postinfectious OD compared to posttraumatic (aOR, 0.33; 95%CI, 0.12-0.89) or idiopathic OD (aOR, 0.26; 95%CI, 0.11-0.62), and those that had parosmia at first visit (aOR, 2.35; 95%CI, 1.22-4.54).