Stratification of Costs
We divided costs based on whether they were driven by overall implementation (intervention-level costs), the number of counselors employed (counselor-level costs), or the number of participants enrolled in each intervention (participant-level costs). Intervention-level costs included those that did not vary as the program grew (i.e. infrastructure costs, office equipment, supervisory staff salaries and benefits, and software development and information technology (IT) support costs). Counselor-level costs included those related to an individual counselor (i.e., tables, chairs, phones, and audio recording equipment for intervention fidelity assessment). Per-participant costs included counselor staff time (calculated based on participant-minute resource logs); cell phone credit supplied to participants; workbook photocopying; and other participant-level costs.