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

Mònica Astals 1 email, Laura Díaz 1 email, Antònia Domingo-Salvany 2 email, Rocío Martín-Santos 1 email, Antoni Bulbena 1,3 email and Marta Torrens 1,3,* email
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

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MDPI and ACS Style

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.

AMA Style

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. International Journal of Environmental Research and Public Health. 2009; 6(11):2822-2832.

Chicago/Turabian Style

Astals, Mònica; Díaz, Laura; Domingo-Salvany, Antònia; Martín-Santos, Rocío; Bulbena, Antoni; Torrens, Marta. 2009. "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 6, no. 11: 2822-2832.

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