Health service utilization of heroin abusers: a retrospective cohort study.

AIMS: This study aimed to determine the patterns of medical service utilization among heroin users and to identify the factors associated with the frequency of utilization.

METHODS: We conducted a retrospective/prospective cohort study of 789 heroin-using adults in a catchment area, collecting data on their usage of medical care, including inpatient care, emergency visits, and outpatient care, in a 2-year observation period. We interviewed and reviewed the medical records of 789 heroin users in a methadone clinic of a general hospital in a rural area of Taiwan. The demographic data, records of service use, diagnoses, and information on viral infection status from Jan. 1, 2007 to Dec. 31, 2008 were collected. Most patients were middle-aged and unemployed, had a basic educational level, and began their first heroin use in their twenties.

RESULTS: The health service utilization of heroin users was mostly for infectious diseases, orthopedic conditions, and gastroenterological disorders mainly due to blood-borne or local infections and traumatic injury. Heroin users utilize fewer outpatient or inpatient services, but more emergency care than the general public. The major correlates of inpatient and emergency service utilization were HIV status and education level.

CONCLUSIONS: Our findings suggest that integrated outpatient services may help to enhance medical service accessibility and adherence, and also imply the necessity of putting more effort into promoting health management and safe behaviors in heroin users, particularly the lower-educated addicts.