BACKGROUND: Little is known about mortality of opiate users attending methadone maintenance treatment (MMT) clinics. We sought to investigate mortality and its predictors among human immunodeficiency virus (HIV)-positive MMT clients. METHODS: Records of 306 786 clients enrolled in China's MMT program from 24 March 2004 to 30 April 2011 were abstracted. Mortality rates were calculated for all HIV-positive antiretroviral treatment (ART)-naive and ART-experienced clients. Risk factors were examined using stratified proportional hazard ratios (HRs). RESULTS: The observed mortality rate for all clients was 11.8/1000 person-years (PY, 95% confidence interval [CI], 11.5-12.1) and 57.2/1000 PY (CI, 54.9-59.4) for HIV-positive clients (n = 18 193). An increase in average methadone doses to >75 mg/day was associated with a 24% reduction in mortality (HR = 0.76, CI, .70-.82), a 48% reduction for ART-naive HIV-positive clients (HR = 0.52, CI, .42-.65), and a 47% reduction for ART-experienced HIV-positive clients (HR = 0.53, CI, .46-.62). Among ART-experienced clients, initiation of ART when the CD4(+) T-cell count was >300 cells/mm(3) (HR = 0.64, CI, .43-.94) was also associated with decreased risk of death. CONCLUSIONS: We found high mortality rates among HIV-positive MMT clients, yet decreased risk of death, with earlier ART initiation and higher methadone doses. A higher daily methadone dose was associated with reduced mortality in both HIV-infected and HIV-uninfected clients, independent of ART.
BACKGROUND: Little is known about mortality of opiate users attending methadone maintenance treatment (MMT) clinics. We sought to investigate mortality and its predictors among human immunodeficiency virus (HIV)-positive MMT clients. METHODS: Records of 306 786 clients enrolled in China's MMT program from 24 March 2004 to 30 April 2011 were abstracted. Mortality rates were calculated for all HIV-positive antiretroviral treatment (ART)-naive and ART-experienced clients. Risk factors were examined using stratified proportional hazard ratios (HRs). RESULTS: The observed mortality rate for all clients was 11.8/1000 person-years (PY, 95% confidence interval [CI], 11.5-12.1) and 57.2/1000 PY (CI, 54.9-59.4) for HIV-positive clients (n = 18 193). An increase in average methadone doses to >75 mg/day was associated with a 24% reduction in mortality (HR = 0.76, CI, .70-.82), a 48% reduction for ART-naive HIV-positive clients (HR = 0.52, CI, .42-.65), and a 47% reduction for ART-experienced HIV-positive clients (HR = 0.53, CI, .46-.62). Among ART-experienced clients, initiation of ART when the CD4(+) T-cell count was >300 cells/mm(3) (HR = 0.64, CI, .43-.94) was also associated with decreased risk of death. CONCLUSIONS: We found high mortality rates among HIV-positive MMT clients, yet decreased risk of death, with earlier ART initiation and higher methadone doses. A higher daily methadone dose was associated with reduced mortality in both HIV-infected and HIV-uninfected clients, independent of ART.
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Keywords:
China; HIV; drug users; methadone maintenance treatment; mortality
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