Trajectories in use of substance abuse and mental health services among stimulant users in rural areas.

Objective: This study examined substance abuse and mental health service utilization during a three-year period among stimulant users living in rural areas.

Methods: Participants (N=710) were interviewed at baseline and every six months for 36 months. One-step transition probabilities were constructed between the two types of service use for each consecutive pair of interviews to examine the resulting steady-state probabilities among multiple one-step transition matrices.