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Mental–physical co-morbidity and its relationship with disability: results from the World Mental Health Surveys

Scott, K. M., Von Korff, M., Alonso, J., Angermeyer, M. C., Bromet, E., Fayyad, J., de Girolamo, G., Demyttenaere, K., Gasquet, I., Gureje, O., Haro, J. M., He, Y., Kessler, R. C., Levinson, D., Medina Mora, M. E., Oakley Browne, M., Ormel, J., Posada-Villa, J., Watanabe, M., Williams, D.·2009·Psychological Medicine
DOI 10.1017/s0033291708003188
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Abstract

Background: The relationship between mental and physical disorders is well established, but there is less consensus as to the nature of their joint association with disability, in part because additive and interactive models of co-morbidity have not always been clearly differentiated in prior research. Method: Eighteen general population surveys were carried out among adults as part of the World Mental Health (WMH) Survey Initiative (n=42 697). DSM-IV disorders were assessed using face-to-face interviews with the Composite International Diagnostic Interview (CIDI 3.0). Chronic physical conditions (arthritis, heart disease, respiratory disease, chronic back/neck pain, chronic headache, and diabetes) were ascertained using a standard checklist. Severe disability was defined as on or above the 90th percentile of the WMH version of the World Health Organization Disability Assessment Schedule (WHODAS-II). Results: The odds of severe disability among those with both mental disorder and each of the physical conditions (with the exception of heart disease) were significantly greater than the sum of the odds of the single conditions. The evidence for synergy was model dependent: it was observed in the additive interaction models but not in models assessing multiplicative interactions. Mental disorders were more likely to be associated with severe disability than were the chronic physical conditions. Conclusions: This first cross-national study of the joint effect of mental and physical conditions on the probability of severe disability finds that co-morbidity exerts modest synergistic effects. Clinicians need to accord both mental and physical conditions equal priority, in order for co-morbidity to be adequately managed and disability reduced.

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Metadata

Authors
Scott, K. M., Von Korff, M., Alonso, J., Angermeyer, M. C., Bromet, E., Fayyad, J., de Girolamo, G., Demyttenaere, K., Gasquet, I., Gureje, O., Haro, J. M., He, Y., Kessler, R. C., Levinson, D., Medina Mora, M. E., Oakley Browne, M., Ormel, J., Posada-Villa, J., Watanabe, M., & Williams, D.
Venue
Psychological Medicine
Publisher
Cambridge University Press (CUP)
Published
2008-03-26
Volume
39
Issue
1
Pages
33-43
ISSN
  • 0033-2917
  • 1469-8978
DOI
10.1017/s0033291708003188
Cited by
241
References
19
Language
en
Licence
www.cambridge.org/core/terms (unspecified)

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CoChat. (2026). Citation check: Mental–physical co-morbidity and its relationship with disability: results from the World Mental Health Surveys. https://app.cochat.ai/papers/10.1017/s0033291708003188
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Scott, K. M., Von Korff, M., Alonso, J., Angermeyer, M. C., Bromet, E., Fayyad, J., de Girolamo, G., Demyttenaere, K., Gasquet, I., Gureje, O., Haro, J. M., He, Y., Kessler, R. C., Levinson, D., Medina Mora, M. E., Oakley Browne, M., Ormel, J., Posada-Villa, J., Watanabe, M., & Williams, D. (2009). Mental–physical co-morbidity and its relationship with disability: results from the World Mental Health Surveys. Psychological Medicine. https://doi.org/10.1017/s0033291708003188