“…It is important to understand what factors influence treatment utilization as it may indicate ways to increase utilization and treatment success. To date, only a few published studies have examined predictors of utilization within individual modalities (Etter, 2005;Japuntich et al, 2006;Rabius, Pike, Wiatrek, & McAlister, 2008;Severson, Gordon, Danaher, & Akers, 2008;Shiffman, Kassel, Gwaltney, & McChargue, 2005;Strecher, Shiffman, & West, 2006;Strecher et al, 2008 ;Zbikowski, Hapgood, Smucker Barnwell, & McAfee, 2008), and none have compared utilization of treatment delivered with these three different modalities (i.e., phone, Web, or combined).…”