Abstract
This study explored the frequency of drug treatment utilization by 36,081 injection drug users (IDUs) in Massachusetts, 1996–2002. A number of multiple and logistic regression analyses examined the relationship between demographic characteristics, parental status, level of and type of drug use, history of mental health treatment use, types of drug treatment entered, and the number of times an IDU had entered drug treatment for the seven-year time period. Homelessness, using heroin as the primary drug of choice, and health insurance status were all associated with number of treatments entered. Logistic regression analysis identified that health insurance was a key factor associated with more frequent treatment: those with private health insurance were ten times more likely to be in the 90th percentile (12–107 entries) with respect to number of treatment entries. (Am J Addict 2006;15:440–449)