ArticleLife (Basel, Switzerland)2022
Analysis of Prevalence and Predictive Factors of Long-Lasting Olfactory and Gustatory Dysfunction in COVID-19 Patients.
Article in Life (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.
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Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The assessment of qualitative olfactory dysfunction in COVID-19 patients: a systematic review of tools and their content validity.Frontiers in psychology · 2023Pooled it
- Lost and Found: Is Olfactory Recovery More Promising After COVID-19 Than Other Causes, Even 2 Years Later?International forum of allergy & rhinology · 2026Article
- Presentation and temporal nature of postacute sequelae of SARS-CoV-2 infection in a US national cohort.Brain, behavior, & immunity - health · 2026Article
- Review
- Olfactory Dysfunction After SARS-CoV-2 Infection in the RECOVER Adult Cohort.JAMA network open · 2025Article
- Factors Associated With Persisting Olfactory Dysfunction After COVID-19.Clinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery · 2025Article
- Incidence and prognosis of olfactory and gustatory dysfunctions related to SARS-CoV-2 Omicron strain infection in China: A national multicenter survey of 35,566 individuals.World journal of otorhinolaryngology - head and neck surgery · 2024Article
- Recovery rates of persistent post-COVID-19 olfactory dysfunction using psychophysical assessment: A longitudinal cohort study.World journal of otorhinolaryngology - head and neck surgery · 2024Article
- The Value of Subjective Olfactometry as a Predictive Biomarker of Neurodegenerative Diseases: A Systematic Review.Life (Basel, Switzerland) · 2024Review
- Alcohol Sniff Test (AST): An Important Tool for Screening Post-Viral Olfactory Loss in Acute Flu-Like Dysfunction.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2024Article
- One-year psychophysical evaluation of COVID-19-induced olfactory disorders: a prospective cohort study.BMC medicine · 2023Article
- The Trajectories of Olfactory Dysfunction from the First to the Omicron Wave: Are We Getting over it?Pathogens (Basel, Switzerland) · 2022Article
- Post-Viral Olfactory Loss: What We Learned from the SARS-CoV-2 Pandemic.Life (Basel, Switzerland) · 2022Article
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14 authors.
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Abstract
backgroundAlthough smell and taste disorders are highly prevalent symptoms of COVID-19 infection, the predictive factors leading to long-lasting chemosensory dysfunction are still poorly understood.
methods102 out of 421 (24.2%) mildly symptomatic COVID-19 patients completed a second questionnaire about the evolution of their symptoms one year after the infection using visual analog scales (VAS). A subgroup of 69 patients also underwent psychophysical evaluation of olfactory function through UPSIT.
resultsThe prevalence of chemosensory dysfunction decreased from 82.4% to 45.1% after 12 months, with 46.1% of patients reporting a complete recovery. Patients older than 40 years (OR = 0.20; 95% CI: [0.07, 0.56]) and with a duration of loss of smell longer than four weeks saw a lower odds ratio for recovery (OR = 0.27; 95% CI: [0.10, 0.76]). In addition, 28 patients (35.9%) reported suffering from parosmia, which was associated with moderate to severe taste dysfunction at the baseline (OR = 7.80; 95% CI: [1.70, 35.8]). Among the 69 subjects who underwent the UPSIT, 57 (82.6%) presented some degree of smell dysfunction, showing a moderate correlation with self-reported VAS (
conclusionA clinically relevant number of subjects reported persistent chemosensory dysfunction and parosmia one year after COVID-19 infection, with a moderate correlation with psychophysical olfactory tests.
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