Table 2. Substudy participants and sites.

	Bronx	DC	TOTAL
Patient Interviews (N) / Sites (N)	30 / 7	42 / 7	72 / 14
Investigator Interviews (N) / Sites (N)	6 / 8 a	6 / 6	12 / 14
Focus Groups N (participants/sites)	2 (6 / 4)	1 (6 / 6)	3 (12 / 10)

^a Two investigators from the Bronx each oversaw two research sites.