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. Author manuscript; available in PMC: 2024 Aug 1.
Published in final edited form as: Contemp Clin Trials. 2023 May 30;131:107248. doi: 10.1016/j.cct.2023.107248

Table 3:

Baseline characteristics of randomly recruited participants for patient-level outcomes (N=1345)

Characteristic Total Study Allocation p-value
SOC (N=449) ECHO-COD (N=448) ECHO-COD + P4P (N=448)
Age in years, Mean (SD) 40.7 (7.6) 39.2 (7.1) 42.5 (7.9) 40.5 (7.3) <0.001
Male, N (%) 1108 (82.4%) 381 (84.9%) 354 (79.0%) 373 (83.3%) 0.060
Married, N (%) 555 (41.3%) 182 (40.5%) 174 (38.3%) 199 (44.4%) 0.220
Employed, N (%) 874 (65.0%) 331 (73.7%) 261 (58.3%) 282 (62.9%) <0.001
Below secondary education, N (%)a 147 (10.9%) 53 (11.8%) 41 (9.2%) 53 (11.8%) 0.336
Stably housed, N (%)b 1178 (87.6%) 377 (84.0%) 400 (89.3%) 401 (89.5%) 0.017
History of prior incarceration 606 (45.1%) 176 (39.2%) 247 (55.1%) 183 (40.8%) <0.001
Time on OAT < 3 months, N (%)c 41 (3.0%) 24 (5.3%) 10 (2.2%) 7 (1.6%) 0.002
HIV-positive 483 (35.9%) 131 (29.2%) 208 (46.4%) 144 (32.1%) <0.001
BASIS-24 Subscale scores
 Depression/Functioning, Mean (SD)d 1.6 (0.6) 1.5 (0.5) 1.7 (0.6) 1.5 (0.6) <0.001
 Psychotic symptoms, Mean (SD)d 0.6 (0.6) 0.6 (0.6) 0.7 (0.6) 0.5 (0.6) 0.002
 Interpersonal problems, Mean (SD)d 2.4 (0.7) 2.4 (0.7) 2.3 (0.7) 2.3 (0.7) 0.052
 Emotional liability, Mean (SD)d 1.5 (0.8) 1.4 (0.8) 1.6 (0.8) 1.5 (0.9) <0.001
 Self-harm, Mean (SD)d 0.5 (0.7) 0.4 (0.7) 0.5 (0.8) 0.5 (0.8) 0.040
 Substance use, Mean (SD)d 1.1 (1.0) 1.1 (0.9) 1.2 (1.0) 1.1 (1.0) 0.120
Alcohol use disorder (AUDIT-C screening), N (%) 179 (13.3%) 38 (8.5%) 77 (17.2%) 64 (14.3%) 0.001
Any injection drug use in the last 30 days, N (%) 272 (20.2%) 73 (16.3%) 96 (21.4%) 103 (23.0%) 0.032
a

Less than 12 years of secondary school

b

Stable housing: owned, rented or family-owned housing and high level of confidence of being able to stay in this housing next month

c

Time in OAT ever, not necessarily during the most recent treatment episode

d

Dimensions of the BASIS-24 questionnaire, each dimension is measured on a 0–4 scale, where 0 represents the absence of a problem and 4 represents the most severe problem.

Abbreviations: PWID People Who Inject Drugs, OAT Opioid Agonist Treatment, SOC Standard of Care, ECHO-COD Extension for Community Healthcare Outcomes® modified for Co-occurring Disorders, P4P Pay for Performance, SD standard deviation.