What is the most cost-effective advertising strategy for alcohol pharmacotherapy clinical trials?

s / Drug and Alcohol Dependence 146 (2015) e2–e33 e5 and TM use patterns and preferences pertaining to their substance treatment. Results: Mobile phone ownership was common (93%) with no significant differences in ownership among self-reported homeless, recently incarcerated, and unemployed respondents. Most reported sending or receiving TM (93%) and reporting ‘very much’ or ‘somewhat’ comfort sending TM (79%). Contacting buprenorphine providers by phone (30%) or TM (17%) was uncommon, however most preferred to use either form of communication to reach their provider (67%). Older patients received less TM (25) compared to younger age groups (128) yet were as interested as the rest of the clinic population to have their provider’s mobile phone number (96%) and send TM if at risk of relapse (78%). Conclusions:Ourfindingshighlight the acceptability of enhancing patient-provider mobile phone and TM communications in a public sector, office-based buprenorphine clinic, even among respondents that were not comfortable in using TM. Although mobile phone ownership was very common, frequent turnover in phone ownership and changing phone numbers highlights challenges in feasibility for any future mhealth interventions in this clinical setting. Financial Support: Babak Tofighi is supported by a NRSA T32: Postdoctoral Primary Care Research Training Program (HRSA T32HP22238-01-00) and the Research in AddictionMedicine Scholars Program (R25DA03211). http://dx.doi.org/10.1016/j.drugalcdep.2014.09.694 What is the most cost-effective advertising strategy for alcohol pharmacotherapy clinical trials? David A. Tompkins, Joseph A. Harrison, Eric C. Strain Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United