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Int. J. Environ. Res. Public Health 2009, 6(11), 2822-2832; doi:10.3390/ijerph6112822
Article

Impact of Co-Occurring Psychiatric Disorders on Retention in a Methadone Maintenance Program: An 18-Month Follow-Up Study

1
, 1
, 2
, 1
, 1,3
 and 1,3,*
1 Institute of Psychiatry and Addiction (IAPs), Hospital del Mar and Institut Municipal d’Investigació Mèdica (IMIM), Hospital del Mar, Psg. Marítim 25-29, E-08003 Barcelona, Spain 2 Research Programme in Epidemiology and Public Health, Institut Municipal d’Investigació Mèdica (IMIM), Hospital del Mar, Doctor Aiguader 88, E-08003 Barcelona, Spain 3 Department of Psychiatry, Universitat Autònoma de Barcelona, Barcelona, Spain
* Author to whom correspondence should be addressed.
Received: 15 October 2009 / Accepted: 10 November 2009 / Published: 12 November 2009
(This article belongs to the Special Issue Drug Abuse and Addiction)
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Abstract

We assess the influence of co-occurring psychiatric disorders on retention in 189 opioid dependent patients in a methadone maintenance treatment (MMT) and determine the incidence of psychiatric co-morbidity during an 18-month follow-up period. About 68.5 % were retained in the MMT. Neither co-occurring mental disorders (chi-square = 0.303, df = 1, p = 0.622) nor methadone doses [85 (88.9) vs. 79.2 (85) mg/day, p = 0.672] were related to retention. In the follow-up period 19 new diagnoses were made, mainly major depression and antisocial and borderline personality disorders. Co-occurring psychiatric disorders should be assessed during MMT follow-up.
Keywords: methadone; retention; co-occurring psychiatric disorders; incidence methadone; retention; co-occurring psychiatric disorders; incidence
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Astals, M.; Díaz, L.; Domingo-Salvany, A.; Martín-Santos, R.; Bulbena, A.; Torrens, M. Impact of Co-Occurring Psychiatric Disorders on Retention in a Methadone Maintenance Program: An 18-Month Follow-Up Study. Int. J. Environ. Res. Public Health 2009, 6, 2822-2832.

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