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. 2009 Nov;6(11):2822-32.
doi: 10.3390/ijerph6112822. Epub 2009 Nov 12.

Impact of co-occurring psychiatric disorders on retention in a methadone maintenance program: an 18-month follow-up study

Mònica Astals  1 , Laura Díaz, Antònia Domingo-Salvany, Rocío Martín-Santos, Antoni Bulbena, Marta Torrens
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Impact of co-occurring psychiatric disorders on retention in a methadone maintenance program: an 18-month follow-up study

Mònica Astals et al. Int J Environ Res Public Health. 2009 Nov.

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: co-occurring psychiatric disorders; incidence; methadone; retention.

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Figure 1.
Figure 1.
Situation of the 189 opioid dependent patients admitted to a MMT at 18 months follow-up. * Co-occurring disorders: co-occurring substance use [abuse or dependence] and mental disorders.
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