Table 4.

Measures of cost.

Cost Type	Construct	Measures	Source	Measurement Schedule
Start-Up	Recruitment	Staff time, consultant, and other costs	Staff activity logs; study records and CBO interviews/surveys	Monthly for start-up period; one-time
	Initial training	Number and duration of trainings	Study records	One-time
	Technology development	Staff time, content development costs	Staff activity logs	Monthly for start-up period; one-time
Variable	Shipping and processing HIV and STI test kits	Number of units shipped, STI lab cost per test, staff time per shipment	Study records; staff interviews	Ongoing; one-time
	Participant contacts	Number of participant contacts, staff time per contact	Participant contact logs; staff interviews	Ongoing; one-time
Time-Dependent	Social media advertisement	Total spending	Study records	Ongoing
	Booster training and technical assistance	Staff time by arm	CBO and DTC participant tracking logs; staff activity logs	Ongoing; monthly
	Other staff activities	Staff time by arm	Staff activity logs; CBO interviews/surveys	Monthly; one-time
	Space and occupancy costs	Square feet	Staff interviews	One-time