Small Benefit, Positive ROI for Automated Adherence Reminder Calls?

George Van Antwerp of Silverlink pointed me to this report on the impact of an automated calling service on medication compliance.  Overall medication compliance increased by 2%.  This may not sound like much but it probably has a positive return on investment (ROI).  Basically, one reduced hospitalization due to improved compliance can pay for a lot of low cost interventions.  I hope someone publishes the actual ROI for this program.