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. Author manuscript; available in PMC: 2020 Jun 10.
Published in final edited form as: Psychopharmacology (Berl). 2018 Aug 6;235(10):2957–2966. doi: 10.1007/s00213-018-4986-5

Table 1.

Characteristics of enrolled participants1

Participant characteristics Total enrolled (N = 24) Pioglitazone (N = 8) Placebo (N = 13)
Demographics
  Age (mean ± SD) 39.91 ± 8.22 38.43 ± 9.20 39.54 ± 7.74
  African American 54.2% (13/24) 37.5% (3/8) 61.5% (8/13)
  Female 25.0% (6/24) 37.5% (3/8) 23.1% (3/13)
  Years education (mean ± SD) 13.04 ± 1.63 14.00 ± 2.20 12.69 ± 1.11
  Unemployed 77.3% (17/22) 85.7% (6/7) 84.6% (11/13)
Baseline opioid use
  Used heroin > 2 days past 30 days 62.5% (15/24) 75.0% (6/8) 53.9% (7/13)
  Years of heroin use (mean ± SD) 9.88 ± 8.53 8.88 ± 8.17 11.46 ± 9.24
Study retention
  Completed study 25.0% (6/24) 25% (2/8) 30.8% (4/13)
  Evaluable 70.8% (17/24) 75% (6/8) 84.6% (11/13)