Global Consortium
for Chemosensory Research

COVID-19 Projects

Global Consortium for Chemosensory Research (GCCR) is a diverse group of scientists, clinicians, patient advocates, and community partners that formed during the COVID-19 pandemic in March 2020. Members are distributed across 30 countries on five continents.

Research question & prediction

How prevalent is smell loss during COVID-19? Is COVID-19 related smell loss greater than smell loss due to other viral or respiratory illnesses? We predict that self-reported smell ability for respondents with COVID-19 will be lower than that of respondents without illness or those with other viral or respiratory illnesses.

Contents

This questionnaire includes items on smell, taste and chemesthesis function, as well as the collection of information on COVID-19 diagnosis. We also ask about COVID-19 symptoms, other viral and respiratory illness symptoms, other medical conditions, smoking, and medicine use. This will allow us to draw conclusions about how important the reports of loss of smell are relative to other symptoms of COVID-19 and if reports of loss of smell can aid in distinguishing between COVID-19 and other illnesses. Collecting data globally has the advantage of a large sample size and a reduced influence of local factors.

Languages

Arabic, Assamese, Bengali, Chinese (simplified), Chinese (traditional), Dutch, Danish, English, French, Finnish, German, Gujarati, Greek, Hebrew, Hind, Italian, Japanese, Kannada, Malayalam, Marathi, Oriya, Portuguese, Punjabi, Russian, Spanish, Swedish, Slovene, Turkish, Tamil, Telugu, Urdu

OSF page

Details of the questionnaire can be found on our OSF page. Here we describe our planned data processing, statistical tests for hypothesis testing and exploratory analyses. You may also find the preregistration of this study there. You can download simulated data there. Data analysis scripts are available and anonymised data will also be made public there.

Questionnaire

You can take the questionnaire on this page.

The ability to smell, taste and the sensitivity to irritation in the nose and mouth can be impaired for various reasons - for example, in respiratory diseases by cold viruses and also by the new coronavirus (SARS-CoV2; CoViD-19) or even by completely different diseases.

We would like to investigate how these senses fluctuate over time. The results will help to assess whether the senses are more or less affected in COVID-19 than in other diseases and healthy people.

Filter tags:
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    This section was last updated October 13, 2023

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