Somatoform disorders are an important factor in functional disability and role impairment, though their independent contribution to disability has been unclear because of prevalent medical and psychiatric comorbidity.
ObjectivesTo assess the extent of the overlap of somatization with other psychiatric disorders and medical problems, to compare the functional disability and role impairment of somatizing and non-somatizing patients, and to determine the independent contribution of somatization to functional disability and role impairment.
DesignPatients were surveyed with self-report questionnaires assessing somatization, psychiatric disorder, and role impairment. Medical morbidity was indexed with a computerized medical record audit.
ParticipantsConsecutive adults making scheduled visits to their primary care physicians at two hospital-affiliated primary care practices on randomly chosen days.
MeasurementsIntermediate activities of daily living, social activities, and occupational disability.
ResultsPatients with somatization, as well as those with serious medical and psychiatric illnesses, had significantly more impairment of activities of daily life and social activities. When these predictors were considered simultaneously in a multivariable regression, the association with somatization remained highly significant and was comparable to or greater than many major medical conditions.
ConclusionsPatients with somatization had substantially greater functional disability and role impairment than non-somatizing patients. The degree of disability was equal to or greater than that associated with many major, chronic medical disorders. Adjusting the results for psychiatric and medical co-morbidity had little effect on these findings.
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We wish to acknowledge the invaluable assistance of Deborah Williams, MHA, and Julie Fiskio, BA, and of Lindsay B. Renner, BA, Jessica Payne-Murphy, BA, Kathryn A. Griffiths, MA, and Susan L. Rose.
This study was supported by a research grant from the Aetna Quality Care Research Fund.
Conflict of interestNone disclosed.
Author information Authors and AffiliationsDepartment of Medicine, Brigham and Women’s Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115–6106, USA
Ashley M. Harris MD
Division of General Internal Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115–6106, USA
E. John Orav PhD
Division of General Internal Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115–6106, USA
David W. Bates MD, MSc.
Department of Psychiatry, Brigham and Women’s Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115–6106, USA
Arthur J. Barsky MD
Department of Health Care Policy, Harvard School of Public Health, 75 Francis Street, Boston, MA, 02115–6106, USA
David W. Bates MD, MSc.
Correspondence to Ashley M. Harris MD.
About this article Cite this articleHarris, A.M., Orav, E.J., Bates, D.W. et al. Somatization Increases Disability Independent of Comorbidity. J GEN INTERN MED 24, 155–161 (2009). https://doi.org/10.1007/s11606-008-0845-0
Received: 19 May 2008
Revised: 02 October 2008
Accepted: 08 October 2008
Published: 25 November 2008
Issue Date: February 2009
DOI: https://doi.org/10.1007/s11606-008-0845-0
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