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Empirical Grouping of Pain Zones in Fibromyalgia A Preliminary Study

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dc.contributor.authorVallejo Pareja, Miguel Ángel
dc.contributor.authorRivera, Javier MD
dc.contributor.authorVallejo-Slocker, Laura
dc.contributor.funderAgencia Estatal de Investigación (España)
dc.date.accessioned2025-12-03T12:52:08Z
dc.date.available2025-12-03T12:52:08Z
dc.date.issued2019-03-29
dc.description.abstractObjectives: Widespread pain is important for the diagnosis of fibromyalgia (FM). For this purpose, the sum of pain regions obtained from a topographical distribution has been used to compute a Widespread Pain Index (WPI), but there is no empirical basis for choosing the regions. The aim of this study was to find an empirical distribution of the pain regions. Materials and Methods: We evaluated 228 female patients with FM. They completed the Fibromyalgia Survey Questionnaire, Fibromyalgia Impact Questionnaire (FIQ), Combined Index of Severity in Fibromyalgia (ICAF), and Short Form-36 Health Survey. The pain regions of the WPI were grouped by the topographical distribution (WPIR) and compared with a new empirical distribution (WPIE) obtained through exploratory factor analysis. A decision- tree analysis was conducted to identify the optimal algorithm for selecting pain regions related to the severity of FM. Results: The WPIE has a normal distribution compared with the WPIR. It also shows higher correlations with FM severity. From the factor analysis, 4 factors explain 48.5% of the variance. Two factors (emotional and physical) can conform to the decision-tree analysis using the dependent variables FIQ and ICAF. These factors are very congruent with the cutoff points previously proposed for FIQ and ICAF. The emotional factor is the first in the decision-tree. Discussion: WPIE has a normal distribution and shows better predictive qualities than WPIR. The emotional factor is conceptualized as emotional because of the relative importance of the right hemisphere in negative emotions and pain. The physical factor could be responsible for the decreased ability to coordinate left-right stepping.en
dc.description.provenanceMade available in DSpace on 2025-12-03T12:52:08Z (GMT). No. of bitstreams: 1 Vallejo_Miguel_A._Empirical grouping of pain_MIGUEL ANGEL VALLEJO.pdf: 250275 bytes, checksum: 47ec4e904fc0fdbd70c28b2e55831151 (MD5) Previous issue date: 2019-03-29en
dc.description.versionversión final
dc.identifier.citationVallejo, Miguel A. PhD*; Rivera, Javier MD, PhD†; Vallejo-Slocker, Laura MSc*. Empirical Grouping of Pain Zones in Fibromyalgia: A Preliminary Study. The Clinical Journal of Pain 35(7):p 611-617, July 2019. | DOI: 10.1097/AJP.0000000000000717
dc.identifier.doihttps://doi.org/10.1097/AJP.0000000000000717
dc.identifier.issn1536-5409
dc.identifier.urihttps://hdl.handle.net/20.500.14468/30990
dc.journal.titleClinical Journal of Pain
dc.journal.volume35
dc.language.isoen
dc.page.final61
dc.page.initial611
dc.publisherWolters-Kluwer
dc.relation.centerFacultad de Psicología
dc.relation.departmentPsicología de la Personalidad, Evaluación y Tratamiento Psicológico
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject6111 Personalidad
dc.subject.keywordsfibromyalgiaen
dc.subject.keywordswidespread painen
dc.subject.keywordsdiagnosisen
dc.titleEmpirical Grouping of Pain Zones in Fibromyalgia A Preliminary Studyen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublicationd180bc15-31cb-4283-b24b-0912910093aa
relation.isAuthorOfPublication.latestForDiscoveryd180bc15-31cb-4283-b24b-0912910093aa
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