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Bipolar disorder in a national survey using the World Mental Health Version of the Composite International Diagnostic Interview: the impact of differing diagnostic algorithms.

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Title: Bipolar disorder in a national survey using the World Mental Health Version of the Composite International Diagnostic Interview: the impact of differing diagnostic algorithms.
Authors: Mitchell, P. B., Johnston, A. K., Frankland, A., Slade, T., Green, M. J., Roberts, G., Wright, A., Corry, J., Hadzi‐Pavlovic, D.
Source: Acta Psychiatrica Scandinavica. May2013, Vol. 127 Issue 5, p381-393. 13p. 6 Charts.
Subjects: Diagnosis of bipolar disorder, Classification of mental disorders, Composite International Diagnostic Interview, Health surveys, Severity of illness index
Abstract: Mitchell PB, Johnston AK, Frankland A, Slade T, Green MJ, Roberts G, Wright A, Corry J, Hadzi-Pavlovic D. Bipolar disorder in a national survey using the World Mental Health Version of the Composite International Diagnostic Interview: the impact of differing diagnostic algorithms. Objective: The World Mental Health Version of the Composite International Diagnostic Interview (WMH-CIDI) DSM-IV bipolar disorder diagnostic algorithms were recalibrated in about 2006 following evidence of over-diagnosis of bipolar I disorder. There have been no reports of the impact of this recalibration on epidemiological findings. Method: Data were taken from the 2007 Australian National Survey of Mental Health and Wellbeing. Findings for cases identified by the recalibrated bipolar disorder definition were contrasted against those identified by the un-recalibrated definition. Results: The 12-month prevalence of recalibrated bipolar disorder and un-recalibrated bipolar disorder were 0.9% and 1.7% respectively. The un-recalibrated bipolar disorder group was younger and more likely to have never married than the recalibrated bipolar disorder group. They were also more likely to have a comorbid alcohol use disorder, substance use disorder and asthma or arthritis. While they were more likely to have at least severe interference in at least one of the Sheehan Scale domains of functioning, they were less likely to have made a suicide attempt. Similarly, they were less likely to have consulted a psychiatrist. Conclusion: It is not possible to be certain about the nature of these differences. Some may be artifactual (reflecting greater statistical power to detect differences with the larger un-recalibrated bipolar disorder defined sample), while others may be indicative of the inclusion of a clinically distinct subpopulation with the un-recalibrated bipolar disorder definition, thereby producing a more heterogeneous sample. These findings indicate the need for clarity in the diagnostic algorithm used in epidemiological reports on bipolar disorder using the World Mental Health Version of the Composite International Diagnostic Interview. [ABSTRACT FROM AUTHOR]
Copyright of Acta Psychiatrica Scandinavica is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="DE" term="%22Diagnosis+of+bipolar+disorder%22">Diagnosis of bipolar disorder</searchLink><br /><searchLink fieldCode="DE" term="%22Classification+of+mental+disorders%22">Classification of mental disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+International+Diagnostic+Interview%22">Composite International Diagnostic Interview</searchLink><br /><searchLink fieldCode="DE" term="%22Health+surveys%22">Health surveys</searchLink><br /><searchLink fieldCode="DE" term="%22Severity+of+illness+index%22">Severity of illness index</searchLink>
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  Data: Mitchell PB, Johnston AK, Frankland A, Slade T, Green MJ, Roberts G, Wright A, Corry J, Hadzi-Pavlovic D. Bipolar disorder in a national survey using the World Mental Health Version of the Composite International Diagnostic Interview: the impact of differing diagnostic algorithms. Objective: The World Mental Health Version of the Composite International Diagnostic Interview (WMH-CIDI) DSM-IV bipolar disorder diagnostic algorithms were recalibrated in about 2006 following evidence of over-diagnosis of bipolar I disorder. There have been no reports of the impact of this recalibration on epidemiological findings. Method: Data were taken from the 2007 Australian National Survey of Mental Health and Wellbeing. Findings for cases identified by the recalibrated bipolar disorder definition were contrasted against those identified by the un-recalibrated definition. Results: The 12-month prevalence of recalibrated bipolar disorder and un-recalibrated bipolar disorder were 0.9% and 1.7% respectively. The un-recalibrated bipolar disorder group was younger and more likely to have never married than the recalibrated bipolar disorder group. They were also more likely to have a comorbid alcohol use disorder, substance use disorder and asthma or arthritis. While they were more likely to have at least severe interference in at least one of the Sheehan Scale domains of functioning, they were less likely to have made a suicide attempt. Similarly, they were less likely to have consulted a psychiatrist. Conclusion: It is not possible to be certain about the nature of these differences. Some may be artifactual (reflecting greater statistical power to detect differences with the larger un-recalibrated bipolar disorder defined sample), while others may be indicative of the inclusion of a clinically distinct subpopulation with the un-recalibrated bipolar disorder definition, thereby producing a more heterogeneous sample. These findings indicate the need for clarity in the diagnostic algorithm used in epidemiological reports on bipolar disorder using the World Mental Health Version of the Composite International Diagnostic Interview. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Acta Psychiatrica Scandinavica is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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