TY - JOUR KW - Adult KW - Age Factors KW - Cross-Sectional Studies KW - Follow-Up Studies KW - Humans KW - Libido/drug effects KW - Logistic Models KW - Malaysia KW - Male KW - Methadone maintenance therapy KW - Methadone/adverse effects/therapeutic use KW - Middle Aged KW - Odds Ratio KW - Opiate Substitution Treatment/adverse effects/methods KW - Opioid-Related Disorders/complications/drug therapy KW - Quality of Life KW - Relationship KW - Risk Assessment KW - Sexual Behavior/drug effects/psychology KW - sexual desire KW - sexual dysfunction KW - Smoking AU - A. Yee AU - H. S. Loh AU - C. G. Ng AU - A. H. Sulaiman A1 - AB - Low sexual desire (SD) is not life threatening, but its negative impact on the quality of life and intimacy of a relationship among the patients on methadone maintenance therapy (MMT) is significant. This cross-sectional study involved 183 men on MMT who were interviewed and who completed the Malay version of the SDI-2 (SDI-2-BM), the Malay version of the self-rated Montgomery-Asberg Depression Rating Scale (MADRS-BM) and World Health Organization Quality of Life-BREF Scale (WHOQOL-BREF) questionnaires. Findings showed 32.8% ( n = 60) participants had low SD. Those who were older, had sexual partners, and were smokers achieved lower scores in both dyadic SD (