Assessing program fidelity to critically reflect on the suitability of Critical Time Intervention to facilitate exiting sex work

An emerging approach to facilitating exiting sex work is through applying the Critical Time Intervention [CTI] model. CTI represents a time-limited approach that supports marginalized individuals during periods of transition. We performed a fidelity assessment as part of a process evaluation of Exit Doors Here [EDH], a program supporting women who wish to exit sex work. We reflect on the appropriateness of the CTI model for supporting these women, and highlight contextual and population specificities which might need to be considered for effective scaling up of similar programs. First, we applied an existing fidelity assessment tool to the EDH program. Program staff highlighted areas for adaptation. We then adapted the tool based on this feedback and assessed program fidelity by analyzing data from eight participants' CTI charts. Fidelity ratings were computed and interpreted according to established guidelines. Consultations with program staff resulted in adaptations to seven of the 12 fidelity assessment tool items. The majority of adaptations surrounded the time-limited nature of CTI and unique needs of the program participants such as their experiences with violence and substance use. The fidelity assessment of the adapted tool demonstrated that even after adaptations were made, certain items were still not appropriate for this study population. Difficulties in implementing selected program components with high fidelity can be attributed to contextual and population specificities of the study population. This study reiterates the importance of considering such factors when developing and implementing programs aimed at improving the health and livelihoods of marginalized women such as those who engage in sex work.