Study instrument
The questionnaire’s questions were adopted from two validated tools. The first tool is the “Anosmia Reporting Tool”, which was developed by the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) (11), is used to study the prevalence and pattern of anosmia and dysgeusia in COVID patients as well as the associated risk factors. The second is the “brief version of the questionnaire of olfactory disorders” (12), which is used to study the impact of anosmia and dysgeusia during COVID infections on patients. The questionnaire includes four sections: patients’ socio-demographics and clinical characteristics, an assessment of the sense of smell, assessment of the sense of taste, and the impact of anosmia and ageusia on patients’ life.