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Table 4 Comparisons of individuals with opioid dependence and controls on cognitive measures using ANOVA

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

  Controls (n = 15) Individuals with Opioid Dependence (n = 15)     
Domain Mean ± SD (CI)a Mean ± SD (CI) F df d P
Test
Attention       
   PASAT 47.5 ± 7.8 (43.2 – 51.8) 36.1 ± 10.1 (30.4 – 41.7) 12.00 1,28 1.26 0.002
   WMS-R Digit Span 15.4 ± 3.8 14.9 ± 2.7 0.15 1,28 0.15 NS
Memory       
   RAVLT, sum of learning trials 1–3 32.3 ± 6.1 28.9 ± 6.0 2.64 1, 28 0.56 NS
   RAVLT, delayed recall 10.7 ± 2.8 9.0 ± 2.8 2.65 1, 28 0.61 NS
   WMS-R Logical Memory, immediate 28.0 ± 5.5 25.9 ± 8.1 0.72 1, 28 0.30 NS
   WMS-R Logical Memory, delayed recall 25.1 ± 6.6 22.3 ± 7.3 1.20 1, 28 0.40 NS
   BVRT, number of right figures 7.4 ± 1.3 6.8 ± 1.6 0.88 1, 28 0.41 NS
Executive function       
   Stroop, modified interference time 24.5 ± 12.0 25.1 ± 8.8 0.30 1, 28 0.12 NS
   RFFT, unique designs 86.3 ± 22.6 (73.9 – 98.8) 68.1 ± 21.2 (43.2 – 51.8) 5.22 1, 28 0.83 0.03
   RFFT, perseverative errors 2.8 (2.6) 3.4 (2.9) 0.34 1,28 0.22 NS.
Fluid intelligence       
   CFIT 34.0 ± 3.8 (32.5 – 36.7) 30.4 ± 4.2 (28.0 – 32.8) 7.97 1, 27 0.90 0.009
  1. a CI = confidence interval
  2. Note: CFIT = Culture Fair Intelligence Test; PASAT = Paced Auditory Serial Addition Task; WMS-R = Wechsler Memory Scale-Revised; RAVLT = Rey Auditory Verbal Learning; BVRT = Benton Visual Retention Test; RFFT = Ruff Figural Fluency Test.
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