Table 2: Key Characteristics of Individual Participants.

Participant Number Age (at time of IDI) Gender Self-Reported Injectable Drug use (yes/no)1 Self-Reported Non-Injectable Drug use (yes/no)2 Pre-Intervention Adherence
(Months 1-3)3 		Adherence in Last Intervention Month (Month 9)3
1 32 M Yes Yes optimal optimal
2 22 M No No suboptimal suboptimal
3 20 M No No optimal optimal
4 40 M Yes Yes optimal optimal
5 35 M Yes No suboptimal optimal
6 38 F Yes Yes optimal optimal
7 28 M No Yes suboptimal optimal
8 26 M No No optimal optimal
9 34 M Yes Yes optimal optimal
10 30 F No No suboptimal optimal
11 33 F No No suboptimal optimal
12 29 F No No suboptimal optimal
13 35 M No No optimal suboptimal
14 40 M Yes Yes optimal optimal
15 33 M No No suboptimal optimal
16 32 M No No suboptimal optimal
17 35 F No No suboptimal suboptimal
18 42 M Yes Yes optimal optimal
19 35 M No No optimal optimal
20 31 F No No optimal optimal

1Yes denotes heroin use; 2of 7 who self-reported non-injectable drug use: 6 had smoked heroin, 2 had taken methadone, 2 had snorted or swallowed ketamine, 1 had snorted or swalled amphetamines or methamphetamines, and 1 had smoked opium; 3optimal adherence refers to ≥ 95% adherence and suboptimal adherence refers to <95% adherence as measured by a real-time wireless pill monitor.