4. Comparing COVID positive and Olfactory Dysfunction Populations
Two distinct populations have assessed in the literature. The first group were those patients who had received testing and were confirmed positive COVID19 patients, the prevalence of OD was then analysed. The second were people who had experienced OD and the prevalence of COVID19 within this cohort. Menni et al and Yan et al report data from both groups concurrently and presented data for both populations in their results .