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. Author manuscript; available in PMC: 2023 May 1.
Published in final edited form as: J Subst Abuse Treat. 2021 Nov 24;136:108666. doi: 10.1016/j.jsat.2021.108666

Table 1.

Baseline characteristics of study sample

Total n=40 ED-LINC Intervention n=20 Usual Care Control n=20
Demographics
 Age (mean, ±SD)  37.4 (9.3)  35.5 (10.7)  39.3 (9.3)
 Female, n (%)  18 (45.0)  8 (40.0)  10 (50.0)
 Race a, n (%)
  White  23 (57.5)  11 (55.0)  12 (60.0)
  African American/Black  5 (12.5)  1 (5.0)  4 (20.0)
  Multiple Race  4 (10.0)  4 (20.0)  0 (0.0)
  Other  5 (20.0)  4 (20.0)  4 (20.0)
 Homeless/unstable housing, n (%)  20 (50.0)  8 (40.0)  12 (60.0)
 Probation/warrant, n (%)  10 (25.0)  3 (15.0)  7 (35.0)
 Employed, n (%)  2 (5.0)  1 (5.0)  1 (5.0)
 Unable to work (disabled), n (%)  7 (17.5)  5 (25.0)  2 (10.0)
Insurance, n (%)
 Medicaid  33 (82.5)  15 (75.0)  18 (90)
 Medicare  3 (7.5)  2 (10.0)  1 (5.0)
 Commercial  1 (2.5)  1 (5.0)  0 (0.0)
 Medicare + Medicaid  3 (7.5)  2 (10.0)  1 (5.0)
Mental Health, n (%)
 PHQ9 total ≥10  27 (67.5)  15 (75.0)  12 (60.0)
 PHQ9 item 9 positive  12 (30.0)  8 (40.0)  4 (20.0)
 GAD7 total ≥7  29 (72.5)  17 (85.0)  12 (60.0)
Substance use, n (%)
 Lifetime heroin use  39 (97.5)  20 (100.0)  19 (95.0)
 Lifetime prescription opioid misuse  25 (62.5)  12 (60.0)  13 (65.0)
 Past 30-day heroin use  38 (95.0)  19 (95.0)  19 (95.0)
 Past 30-day prescription opioid misuse  8 (20.5)  6 (30.0)  2 (10.5)
 Past 30-day cocaine use  12 (30.0)  6 (30.0)  6 (30.0)
 Past 30-day cannabis use  23 (57.5)  13 (65.0)  10 (50.0)
 Past 30-day amphetamine use  27 (67.5)  13 (65.0)  14 (70.0)
 Past 30-day alcohol use  17 (42.5)  9 (45.0)  8 (40.0)
 Past 30-day tobacco use  35 (87.5)  19 (95.0)  16 (80.0)
 Past 30-day hallucinogen  6 (15.0)  5 (25.0)  1 (5.0)
 Past 30-day sedative misuse  14 (35.0)  7 (35.0)  7 (35.0)
Overdose Risk Questions, n (%)
 Lifetime opioid overdose  23 (57.5)  10 (50.0)  13 (65.0)
 Past year overdose  14 (35.0)  4 (20.0)  10 (50.0)
 Use opioid alone  33 (82.5)  18 (90.0)  15 (75.0)
 Mixed opioids with other drugs  32 (80.0)  16 (80.0)  16 (80.0)
HIV Risk Behaviors, n (%)
 HIV positive  1 (2.5)  1 (5.0)  0 (0.0)
 HCV positive  13 (32.5)  6 (30.0)  7 (35.0)
 Injects more than once 1 day  22 (56.4)  11 (57.9)  11 (55.0)
 Shares needles  3 (7.7)  2 (10.5)  1 (5.0)
 Reuse needles  16 (40.0)  8 (40.0)  8 (40.0)
 Engages in transactional sex  11 (28.2)  7 (36.8)  4 (20.0)
Clinical characteristics, n (%)
 ED chief complaint is seeking treatment for OUD  9 (22.5)  6 (30.0)  3 (15.0)
 ED chief complaint is opioid withdrawal  2 (5.0)  1 (5.0)  1 (5.0)
 ED chief complaint is overdose  2 (5.0)  1 (5.0)  1 (5.0)
 ED chief complaint is skin/soft tissue infection  14 (35.0)  5 (25.0)  9 (45.0)
 ED chief complaint is ‘other’  19 (47.5)  10 (50.0)  9 (45.0)
a

missing three responses, n=37