“…Five studies were randomized trials that compared two interventions, one of which was intended to act as an active control (Abroms, Windsor, & Simons-Morton, 2008;Brendryen, Drozd, & Kraft, 2008;Japuntich et al, 2006;King et al, 2009;Mermelstein & Turner, 2006). Two studies included treatment users who selfselected to participate in a research evaluation with no comparison or control group (Hotta et al, 2007;Zbikowski, Hapgood, Smucker Barnwell, & McAfee, 2008).…”