Although a meta-analysis observed that delivering CCT with CBT yielded the best outcomes during treatment (Dutra et al., 2008), few RCTs have been conducted to date. It also remains unclear whether there are long-term benefits of this combined approach compared to CBT alone with stimulant users (Epstein et al., 2003; Rawson et al., 2006). Furthermore, relatively little is known about the sequential implementation of CCT and CBT interventions in resource-limited settings like Cambodia where formal substance abuse treamtent is often unavailable and structural factors are key determinants of ATS use (Dixon et al.,2015; Maher et al., 2011). The goal of this study was to document the adaptation and implementation of evidencebased behavioral interventions for ATS-using FESW in Cambodia. First, we describe the adaptation of a 12-week CCT intervention and 4-week cognitive-behavioral aftercare (AC) group based on the Matrix Model to meet the needs of FESW who use ATS. Then, we detail procedures employed to sequentially implement CCT AC as part of an ongoing cluster randomized stepped wedge trial in 10 Cambodian provinces. Process data on enrollment as well as attendance of CCT urine screening visits and AC sessions from the first six provinces are also provided to index
feasibility of these behavioral interventions with Cambodian
FESW who use ATS.