Evidence map›Paper›PMID 35265728›Full record

ArticleOpen forum infectious diseases2022

Identification of Distinct Long COVID Clinical Phenotypes Through Cluster Analysis of Self-Reported Symptoms.

Grace Kenny, Kathleen McCann, Conor O'Brien, Stefano Savinelli, Willard Tinago, Obada Yousif, John S Lambert, Cathal O'Broin, Eoin R Feeney, Eoghan De Barra and 3 more

Open access · goldAbstract read
In one paragraph

Article in Open forum infectious diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed, 3 pooled it
17.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

92 citing papers in PubMed, 3 syntheses or guidelines pooled it, 145 citations in OpenAlex.

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  8. Post-COVID-19 physical and mental quality of life: a latent profile analysis and predictive factors.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026
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32 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 4 institutions in 1 country.

Grace KennyCentre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland.
Kathleen McCannDepartment of Infectious Diseases, St Vincent's University Hospital, Elm Park, Dublin, Ireland.
Conor O'BrienSchool of Medicine, University College Dublin, Belfield, Dublin, Ireland.
Stefano SavinelliCentre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland.
Willard TinagoCentre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland.
Obada YousifEndocrinology Department, Wexford General Hospital, Carricklawn, Wexford, Ireland.
John S LambertCentre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland.
Cathal O'BroinCentre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland.
Eoin R FeeneyCentre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland.
Eoghan De BarraDepartment of Infectious Diseases, Beaumont Hospital, Beaumont, Dublin, Ireland.
Peter DoranSchool of Medicine, University College Dublin, Belfield, Dublin, Ireland.
Patrick W G MallonCentre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland.
All-Ireland Infectious Diseases (AIID) Cohort Study Group
University College Dublin · IERoyal College of Surgeons in Ireland · IESt. Vincent's University Hospital · IEWexford General Hospital · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: We aimed to describe the clinical presentation of individuals presenting with prolonged recovery from coronavirus disease 2019 (COVID-19), known as long COVID. Methods: This was an analysis within a multicenter, prospective cohort study of individuals with a confirmed diagnosis of COVID-19 and persistent symptoms >4 weeks from onset of acute symptoms. We performed a multiple correspondence analysis (MCA) on the most common self-reported symptoms and hierarchical clustering on the results of the MCA to identify symptom clusters. Results: Two hundred thirty-three individuals were included in the analysis; the median age of the cohort was 43 (interquartile range [IQR], 36-54) years, 74% were women, and 77.3% reported a mild initial illness. MCA and hierarchical clustering revealed 3 clusters. Cluster 1 had predominantly pain symptoms with a higher proportion of joint pain, myalgia, and headache; cluster 2 had a preponderance of cardiovascular symptoms with prominent chest pain, shortness of breath, and palpitations; and cluster 3 had significantly fewer symptoms than the other clusters (2 [IQR, 2-3] symptoms per individual in cluster 3 vs 6 [IQR, 5-7] and 4 [IQR, 3-5] in clusters 1 and 2, respectively; Conclusions: Clusters of symptoms are evident in long COVID patients that are associated with functional impairments and may point to distinct underlying pathophysiologic mechanisms of disease.

Indexed as

22 infectionCoVlong COVIDpost–acute sequelae of SARSSARS

Identifiers

PMID35265728
PMCPMC8900926
OpenAlexW4220831943

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.