| Domain or test | Medication variables | Substance abuse variables | Demographic variables | Significant correlations after controlling for two other correlates |
|---|---|---|---|---|
| Attention (T2) |
Opioid substitution drug .48 ( p = 0.003) Number of other psychoactive drugs (T2) .24 |
Opioid abuse onset age .25 |
Opioid substitution drug .46, ( p = 0.004) | |
| Attention (T3) |
Opioid substitution drug .37 ( p = .024) | Opioid abuse onset age .28 |
Age .26 |
Opioid substitution drug .37, ( p = 0.021) |
| The Letter-Number Sequencing Task (T2) |
Number of other psychoactive drugs .25 |
Frequency of substance abuse in the past month -49 ( p = .002) |
Verbal IQ .29 |
Frequency of substance abuse in the past month -44 ( p = .005) |
| The Letter-Number Sequencing Task (T3) |
Benzodiazepine dose .-38 |
Frequency of substance abuse in the past month .-34 ( p = .044) Years of opioid abuse .28 | ||
| Change score in the Letter-Number Sequencing Task (T3 - T2) |
Opioid substitution drug .34 ( p = .039) |
Change in the opioid agonist dose -.33 Change in the number of psychoactive drugs -.24 | ||
| Verbal memory (T2) |
Number of other psychoactive drugs (T2) .25 |
Frequency of substance abuse in the past month -. 34 ( p = .044) |
Verbal IQ .28 | |
| Verbal memory (T3) |
Number of other psychoactive drugs (T3) .31 |
Verbal IQ .32 Years of education .27 |
Number of other psychoactive drugs .34 ( p = .035) |