Cluster Analysis of Clinical Data Identifies Fibromyalgia Subgroups

Elisa Docampo, Antonio Collado, Geòrgia Escaramís, Jordi Carbonell, Javier Rivera, Javier Vidal, José Alegre, Raquel Rabionet, Xavier P. Estivill

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Introduction:Fibromyalgia (FM) is mainly characterized by widespread pain and multiple accompanying symptoms, which hinder FM assessment and management. In order to reduce FM heterogeneity we classified clinical data into simplified dimensions that were used to define FM subgroups.Material and Methods:48 variables were evaluated in 1,446 Spanish FM cases fulfilling 1990 ACR FM criteria. A partitioning analysis was performed to find groups of variables similar to each other. Similarities between variables were identified and the variables were grouped into dimensions. This was performed in a subset of 559 patients, and cross-validated in the remaining 887 patients. For each sample and dimension, a composite index was obtained based on the weights of the variables included in the dimension. Finally, a clustering procedure was applied to the indexes, resulting in FM subgroups.Results:Variables clustered into three independent dimensions: "symptomatology", "comorbidities" and "clinical scales". Only the two first dimensions were considered for the construction of FM subgroups. Resulting scores classified FM samples into three subgroups: low symptomatology and comorbidities (Cluster 1), high symptomatology and comorbidities (Cluster 2), and high symptomatology but low comorbidities (Cluster 3), showing differences in measures of disease severity.Conclusions:We have identified three subgroups of FM samples in a large cohort of FM by clustering clinical data. Our analysis stresses the importance of family and personal history of FM comorbidities. Also, the resulting patient clusters could indicate different forms of the disease, relevant to future research, and might have an impact on clinical assessment.

Original languageEnglish
Article numbere74873
JournalPLoS One
Volume8
Issue number9
DOIs
Publication statusPublished - 30 Sep 2013
Externally publishedYes

Fingerprint

Fibromyalgia
Cluster analysis
Cluster Analysis
cluster analysis
Stress analysis
Comorbidity
Composite materials
sampling
disease severity
signs and symptoms (animals and humans)
pain
comorbidity

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Docampo, E., Collado, A., Escaramís, G., Carbonell, J., Rivera, J., Vidal, J., ... Estivill, X. P. (2013). Cluster Analysis of Clinical Data Identifies Fibromyalgia Subgroups. PLoS One, 8(9), [e74873]. https://doi.org/10.1371/journal.pone.0074873

Cluster Analysis of Clinical Data Identifies Fibromyalgia Subgroups. / Docampo, Elisa; Collado, Antonio; Escaramís, Geòrgia; Carbonell, Jordi; Rivera, Javier; Vidal, Javier; Alegre, José; Rabionet, Raquel; Estivill, Xavier P.

In: PLoS One, Vol. 8, No. 9, e74873, 30.09.2013.

Research output: Contribution to journalArticle

Docampo, E, Collado, A, Escaramís, G, Carbonell, J, Rivera, J, Vidal, J, Alegre, J, Rabionet, R & Estivill, XP 2013, 'Cluster Analysis of Clinical Data Identifies Fibromyalgia Subgroups', PLoS One, vol. 8, no. 9, e74873. https://doi.org/10.1371/journal.pone.0074873
Docampo E, Collado A, Escaramís G, Carbonell J, Rivera J, Vidal J et al. Cluster Analysis of Clinical Data Identifies Fibromyalgia Subgroups. PLoS One. 2013 Sep 30;8(9). e74873. https://doi.org/10.1371/journal.pone.0074873
Docampo, Elisa ; Collado, Antonio ; Escaramís, Geòrgia ; Carbonell, Jordi ; Rivera, Javier ; Vidal, Javier ; Alegre, José ; Rabionet, Raquel ; Estivill, Xavier P. / Cluster Analysis of Clinical Data Identifies Fibromyalgia Subgroups. In: PLoS One. 2013 ; Vol. 8, No. 9.
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