Retention and its predictors among methadone maintenance treatment clients in China: A six-year cohort study
Retention and its predictors among methadone maintenance treatment clients in China: A six-year cohort study
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DOI:
10.1016/j.drugalcdep.2014.09.776
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发表时间:
2014-12-01
影响因子:
4.2
通讯作者:
Li, Jianhua
中科院分区:
文献类型:
--
作者:
Cao, Xiaobin;Wu, Zunyou;Li, Jianhua
Background: To investigate factors associated with retention among the first cohort of drug users attending methadone maintenance treatment (MMT) clinics in China.Methods: A six-year cohort of 1511 drug users was enrolled in the first 8 MMT clinics in China in 2004 and followed between March, 2004 and December, 2010. Six-year retention rates were calculated and compared by methadone dosage, clinic location, and length of follow-up. Factors associated with retention were evaluated using Cox proportional hazard regression models.Results: The overall retention rate over 6-year was 35.7%. Highest drop-out occurred within the first 12 months of treatment. The retention rates for the 6-year by low (60 mg/day) methadone dosage groups were 20.8%, 34.8% and 53.2%, respectively (p < 0.001). The highest 6-year retention rate among eight clinics was 43.8%, while the lowest one was 17.7% (p < 0.001). The results from Cox proportional hazard models indicate that clients having >30 mg daily methadone dosage (p < 0.001), having relatives receiving MMT (p = 0.027), and having >10% urine morphine positive result (p < 0.001) were more likely to be retained in MMT over the six-year period. It has also found that drug injection (p = 0.005) and needle sharing (p < 0.0001) were significantly associated with better retention.Conclusions: Health workers should adjust individuals' methadone dosages as a method to prevent early treatment termination. Further studies are needed to explore the impact of severity of opiate addiction on long-term retention of MMT clients. Careful assessment of drug users upon MMT enrollment may be helpful for providing additional care to clients. (C) 2014 Published by Elsevier Ireland Ltd.