“…Medication adherence-Medication adherence was assessed using four-items adapted from previously validated measures (Catz, Kelly, Bogart, Benotsch, & McAuliffe, 2000;Chesney et al, 2000). Adherence difficulties were assessed based on a seven day recall period, consistent with other published reports (e.g., Heckman, Catz, Heckman, Miller, & Kalichman, 2004;Wilson, Tchetgen, & Spiegelman, 2001). Prior research confirms that a seven day assessment interval provides a valid estimate of adherence that correlates with electronic (MEMS) monitoring data and is predictive of viral load (Arnsten et al, 2001).…”