“…Our approach differs in a number of ways that adopted in many previous studies examining the correlation between substance abuse, psychiatric illnesses and criminal justice involvement. First, we begin with a population of individuals with medical claims-based diagnoses of opioid abuse and dependence, and treat psychiatric illnesses as co-occurring conditions, in contrast to the opposite perspective typically taken in the psychiatric literature (e.g., Fisher, Wolff, Grudzinksas, 2007; Drake, Wallach &, McGovern, 2005; Mueser, Crocker, Frisman et al, 2006). Also, unlike studies that begin with a justice - involved population and retrospectively assess substance patterns (e.g., James & Glaze, 2006; Nurco et al, 1985; Nurco et al, 1984), we begin with a population of individuals of persons who are addicted to or abuse opioids and who may or may not have additional co-occurring disorders, in particular a severe mental illness, and model criminal justice involvement within that population.…”