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Distinguishing affective and somatic dimensions of pain and depression: a confirmatory factor analytic study
Author(s) -
Lerman Sheera F.,
Rudich Zvia,
Shahar Golan
Publication year - 2010
Publication title -
journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.124
H-Index - 119
eISSN - 1097-4679
pISSN - 0021-9762
DOI - 10.1002/jclp.20674
Subject(s) - depression (economics) , psychology , confirmatory factor analysis , clinical psychology , chronic pain , psychiatry , structural equation modeling , statistics , mathematics , economics , macroeconomics
In this study, we examined the overlap between pain and depression in a sample of 342 chronic pain patients treated at a specialty pain clinic. Confirmatory factor analysis was conducted to test the differentiation of pain and depression measured as latent factors derived from the subscales of the Short Form McGill Pain Questionnaire and the Center for Epidemiological Studies Depression Scale. The affective pain subscale did not load on latent depression and the somatic depression subscale loaded weakly on latent pain. Although pain and depression are linked, we found that affective pain is distinct from depression, and that somatic depression is distinct from pain. This finding justifies further examination of the casual relationship between pain and depression. © 2010 Wiley Periodicals, Inc. J Clin Psychol 66: 1–10, 2010.