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Table 1 Group demographics

From: Cognitive function during early abstinence from opioid dependence: a comparison to age, gender, and verbal intelligence matched controls

  Participants with opioid dependence (n = 15) Controls (n = 15) P-value
Age, years (M, SD) 31.6 (5.8) 31.3 (5.9) NS.
Gender: females/males 9/6 9/6 NS.
Verbal intelligence a( M, SD) 98.7 (8.9) 98.5 (10.1) NS
Education, years (M, SD) 11.6 (1.2) 13.9 (1.6) P < 0.001
Duration of any substance abuse, years (M, SD) 15.2 (6.1)   
Duration of opioid abuse, years (M, SD) 8.6 (4.1)   
Duration of withdrawal, days (M, SD) 9.6 (2.3)   
Short Opiate Withdrawal Scale score (M, SD) 9.8 (5.7) (n = 13)   
  1. aEstimation based on WAIS-R Vocabulary score.
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