The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
The Prevalence of Olfactory and Gustatory Dysfunction in COVID‐19 Patients: A Systematic Review and Meta‐analysis
Abstract
Objective: To determine the pooled global prevalence of olfactory and gustatory dysfunction in patients with the 2019 novel coronavirus (COVID‐19). Data Sources: Literature searches of PubMed, Embase, and Scopus were conducted on April 19, 2020, to include articles written in English that reported the prevalence of olfactory or gustatory dysfunction in COVID‐19 patients. Review Methods: Search strategies developed for each database contained keywords such as anosmia, dysgeusia, and COVID‐19. Resulting articles were imported into a systematic review software and underwent screening. Data from articles that met inclusion criteria were extracted and analyzed. Meta‐analysis using pooled prevalence estimates in a random‐effects model were calculated. Results: Ten studies were analyzed for olfactory dysfunction (n = 1627), demonstrating 52.73% (95% CI, 29.64%‐75.23%) prevalence among patients with COVID‐19. Nine studies were analyzed for gustatory dysfunction (n = 1390), demonstrating 43.93% (95% CI, 20.46%‐68.95%) prevalence. Subgroup analyses were conducted for studies evaluating olfactory dysfunction using nonvalidated and validated instruments and demonstrated 36.64% (95% CI, 18.31%‐57.24%) and 86.60% (95% CI, 72.95%‐95.95%) prevalence, respectively. Conclusions: Olfactory and gustatory dysfunction are common symptoms in patients with COVID‐19 and may represent early symptoms in the clinical course of infection. Increased awareness of this fact may encourage earlier diagnosis and treatment, as well as heighten vigilance for viral transmission. To our knowledge, this is the first meta‐analysis to report on the prevalence of these symptoms in COVID‐19 patients.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Preferred Reporting Items for Systematic Reviews and Meta-Analyses: the PRISMA statement
Moher, D., Liberati, A., Tetzlaff, J., Altman, D. G., & for the PRISMA Group (2009) · BMJ · doi:10.1136/bmj.b2535 · Cited by 83,823
Meta-analysis in clinical trials
DerSimonian, R., & Laird, N. (1986) · Controlled Clinical Trials · doi:10.1016/0197-2456(86)90046-2 · Cited by 39,552
Meta-analysis of Observational Studies in Epidemiology<SUBTITLE>A Proposal for Reporting</SUBTITLE>
Stroup, D. F. (2000) · JAMA · doi:10.1001/jama.283.15.2008 · Cited by 20,623
Lechien, J. R., Chiesa-Estomba, C. M., De Siati, D. R., Horoi, M., Le Bon, S. D., Rodriguez, A., Dequanter, D., Blecic, S., El Afia, F., Distinguin, L., et al. (2020) · European Archives of Oto-Rhino-Laryngology · doi:10.1007/s00405-020-05965-1 · Cited by 2,668
Zou, X., Chen, K., Zou, J., Han, P., Hao, J., & Han, Z. (2020) · Frontiers of Medicine · doi:10.1007/s11684-020-0754-0 · Cited by 2,287
Nervous system involvement after infection with COVID-19 and other coronaviruses
Wu, Y., Xu, X., Chen, Z., Duan, J., Hashimoto, K., Yang, L., Liu, C., & Yang, C. (2020) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2020.03.031 · Cited by 2,046
Giacomelli, A., Pezzati, L., Conti, F., Bernacchia, D., Siano, M., Oreni, L., Rusconi, S., Gervasoni, C., Ridolfo, A. L., Rizzardini, G., et al. (2020) · Clinical Infectious Diseases · doi:10.1093/cid/ciaa330 · Cited by 1,326
Netland, J., Meyerholz, D. K., Moore, S., Cassell, M., & Perlman, S. (2008) · Journal of Virology · doi:10.1128/jvi.00737-08 · Cited by 1,293
Brann, D. H., Tsukahara, T., Weinreb, C., Lipovsek, M., Van den Berge, K., Gong, B., Chance, R., Macaulay, I. C., Chou, H.-J., Fletcher, R. B., et al. (2020) · Science Advances · doi:10.1126/sciadv.abc5801 · Cited by 1,198
Yan, C. H., Faraji, F., Prajapati, D. P., Boone, C. E., & DeConde, A. S. (2020) · International Forum of Allergy & Rhinology · doi:10.1002/alr.22579 · Cited by 754 · cited 4×
“…Klopfenstein et al 29 5 Moderate Lechien et al 27 4 Moderate Mao et al 7 6 Moderate Moein et al 33 4 Moderate Vaira et al 23 9 High Yan et al 31 5 27,34,35 and the COVID 19 Anosmia Reporting Tool recently developed by the AAO HNS (face validity only), 15,16 is particularly interest ing and…”
BackgroundInfluential
Cited by
Freeman, E. E., McMahon, D. E., Lipoff, J. B., Rosenbach, M., Kovarik, C., Desai, S. R., Harp, J., Takeshita, J., French, L. E., Lim, H. W., et al. (2020) · Journal of the American Academy of Dermatology · doi:10.1016/j.jaad.2020.06.1016 · Cited by 409
Anosmia in COVID-19: Underlying Mechanisms and Assessment of an Olfactory Route to Brain Infection
Butowt, R., & von Bartheld, C. S. (2021) · The Neuroscientist · doi:10.1177/1073858420956905 · Cited by 345
Spectrum of neuropsychiatric manifestations in COVID-19.
Nalleballe, K., Reddy Onteddu, S., Sharma, R., Dandu, V., Brown, A., Jasti, M., Yadala, S., Veerapaneni, K., Siddamreddy, S., Avula, A., et al. (2020) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2020.06.020 · Cited by 235
Dysgeusia in COVID-19: Possible Mechanisms and Implications
Lozada-Nur, F., Chainani-Wu, N., Fortuna, G., & Sroussi, H. (2020) · Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology · doi:10.1016/j.oooo.2020.06.016 · Cited by 120
Rabinovitz, B., Jaywant, A., & Fridman, C. B. (2020) · The Clinical Neuropsychologist · doi:10.1080/13854046.2020.1803408 · Cited by 46
Metadata
- Authors
- Tong, J. Y., Wong, A., Zhu, D., Fastenberg, J. H., & Tham, T.
- Venue
- Otolaryngology–Head and Neck Surgery
- Publisher
- Wiley
- Published
- 2020-05-05
- Volume
- 163
- Issue
- 1
- Pages
- 3-11
- ISSN
- 0161-6439 (ISSN-L)
- 0194-5998
- 1097-6817
- OpenAlex
- W3020949620
- Cited by
- 613
- References
- 11
- FWCI
- 16.46
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: The Prevalence of Olfactory and Gustatory Dysfunction in COVID‐19 Patients: A Systematic Review and Meta‐analysis. https://app.cochat.ai/papers/10.1177/0194599820926473
- The paper
- Tong, J. Y., Wong, A., Zhu, D., Fastenberg, J. H., & Tham, T. (2020). The Prevalence of Olfactory and Gustatory Dysfunction in COVID‐19 Patients: A Systematic Review and Meta‐analysis. Otolaryngology–Head and Neck Surgery. https://doi.org/10.1177/0194599820926473
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.