Sniffing out Covid - 'COVORTS study: the COVid cohORT on Smell loss', 'long COVORTS: the COVid cohORT on long-term Smell Loss' and 'Imaging smell loss in Covid-19: an (f)MRI approach'
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1. COVORTS study: the COVid cohORT on Smell loss. The goal of the COVORTS study was to evaluate the course of persistent COVID-19-related chemosensory dysfunction over time and its effects on quality of life and eating behaviour. 76 patients with persistent (>1 month) self-reported olfactory dysfunction after recent (<3 months) SARS-CoV-2 infection (confirmed with a positive PCR-test, or a positive SARS-CoV-2-antigen self-test) aged 18-60 were included. 74 patients signed consent for data sharing. Patients were followed for a period of one year. Measurements involved a monthly online questionnaire (Timepoints T1-T13), and a home visit from a researcher every three months (T1, T4, T7, T10 and T13). Measurements in the monthly questionnaire involved: demographics; self-reported olfactory (including the presence of parosmia and phantosmia symptoms), gustatory and trigeminal perception; the Appetite, Hunger and Sensory Perception (AHSP) questionnaire; the (English) Olfactory Disorders Questionnaire (eODQ); and the home test of the GCCR Smell-&-Taste-Check. Measurements during the home visits involved: the Sniffin’ Sticks test battery (including the extended version of the …
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