Statistical Analyses
Statistical analyses were performed using the Statistical Package for
the Social Sciences for Windows (SPSS version 22,0; IBM Corp, Armonk,
NY, USA). The relationship between clinical and olfactory outcomes was
analyzed through non-parametric test using Spearman correlation for
scale data, Khi2 test for ordinal data and Mann-Whitney or
Kruskal-Wallis test for categorized data. We investigated all potential
associations between nasal complaints (nasal obstruction, rhinorrhea,
postnasal drip) and the occurrence of olfactory disorder (sniffin’stick
test). A level of significance of p<0.05 was used.