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. 2024 May 31;21:107. doi: 10.1186/s12954-024-01007-9

Table 1.

ROI Interview Participant Demographic Characteristics

Interviewees Total Illinois Kentucky North Carolina New England Ohio Oregon Wisconsin
304 (100%) 22 (7%) 57 (19%) 65 (21%) 22 (7%) 26 (9%) 52 (17%) 60 (20%)
Male1 169 (55%) 14 (64%) 35 (61%) 34 (52%) 10 (45%) 15 (58%) 281 (54%) 33 (54%)
Average age 36 37 35 36 33 37 39 35
Race
White 213 (70%) 20 (91%) 56 (98%) 15 (23%) 15 (68%) not asked 49 (94%) 58 (97%)
Black 2 (1%) 2 (9%) 0 (0%) 0 (0%) 0 (0%) -- 0 (0%) 0 (0%)
Native American 8 (3%) 0 (0%) 0 (0%) 5 (8%) 1 (5%) -- 1 (2%) 1 (2%)
Mixed race 5 (2%) 0 (0%) 0 (0%) 2 (3%) 0 (0%) -- 2 (4%) 1 (2%)
Other 1 (0%) 0 (0%) 1 (2%) 0 (0%) 0 (0%) -- 0 (0%) 0 (0%)
Not given/Not asked2 75 (25%) 0 (0%) 0 (0%) 432 (66%) 62 (27%) 262 (100%) 0 (0%) 0 (0%)
Interviewees 304 (100%) 22 (6%) 57 (16%) 65 (19%) 22 (6%) 26 (7%) 52 (15%) 60 (17%)
Substance use
Ever IDU 288 (83%) 20 (91%) 57 (100%) 65 (100%) 21 (95%) 17 (65%) 52 (100%) 56 (93%)
Current IDU 279 (80%) 19 (86%) 57 (100%) 65 (100%) 18 (82%) 15 (58%) 50 (96%) 55 (92%)
Heroin 195 (56%) 8 (36%) 30 (53%) 51 (78%) 18 (82%) 13 (50%) 41 (79%) 34 (57%)
Fentanyl 73 (21%) 1 (5%) 17 (30%) 26 (40%) 14 (64%) 3 (12%) 6 (12%) 6 (10%)
Methamphetamine 210 (60%) 14 (64%) 37 (65%) 61 (94%) 4 (18%) 6 (23%) 47 (90%) 41 (68%)
Other 193 (55%) 4 (18%) 54 (95%) 61 (94%) 15 (68%) 10 (38%) 21 (40%) 28 (47%)
Interviewees 304 (100%) 22 (7%) 57 (19%) 65 (21%) 22 (7%) 26 (9%) 52 (17%) 60 (20%)
Education
< High school 56 (18%) 1 (5%) 21 (37%) 13 (20%) 3 (14%) 7 (27%) not asked 11 (18%)
H.S. or GED 97 (32%) 11 (50%) 22 (39%) 21 (32%) 9 (41%) 11 (42%) -- 23 (38%)
Some college 61 (20%) 7 (32%) 6 (11%) 20 (31%) 3 (14%) 6 (23%) -- 19 (32%)
Assoc/trade deg 16 (5%) 3 (14%) 8 (14%) 0 (0%) 1 (5%) 0 (0%) -- 4 (7%)
>= B.A. 12 (4%) 0 (0%) 0 (0%) 8 (12%) 0 (0%) 1 (4%) -- 3 (5%)
Not answered 62 (20%) 0 (0%) 0 (0%) 3 (5%) 6 (27%) 1 (4%) 52 (100%) 0 (0%)

1. One non-male interviewee from Oregon identifies as “Neither”.

2. Some NC and NE interviewees did not give their race. Ohio did not ask interviewees their race.