Table 3.
Multiple Regressions Predicting Neurobehavioral Symptoms and IADL Declines
| F | β | Adj. R2 | p | |
|---|---|---|---|---|
| FrSBe Total | 4.39 | - | .08 | .002 |
| MA group | - | −.24 | - | .003 |
| LT alcohol dependence | - | −.18 | - | .029 |
| LT cocaine dependence | - | .02 | - | .850 |
| LT cannabis dependence | - | .15 | - | .063 |
| FrSBe Executive Dysfunction | 5.89 | - | .11 | <.001 |
| MA group | - | −.28 | - | <.001 |
| LT alcohol dependence | - | −.21 | - | .014 |
| LT cocaine dependence | - | .04 | - | .636 |
| LT cannabis dependence | - | .16 | - | .045 |
| FrSBe Disinhibition | 4.76 | - | .09 | .001 |
| MA group | - | −.26 | - | .002 |
| LT alcohol dependence | - | −.16 | - | .060 |
| LT cocaine dependence | - | −.04 | - | .586 |
| LT cannabis dependence | - | .07 | - | .359 |
| FrSBe Apathy | 1.77 | - | .02 | .136 |
| MA group | - | −.14 | - | .085 |
| LT alcohol dependence | - | −.10 | - | .220 |
| LT cocaine dependence | - | .07 | - | .421 |
| LT cannabis dependence | - | .16 | - | .059 |
| IADL Declinea | 4.75 | - | .20 | <.001 |
| Total FrSBe T-score | - | .37 | - | .002 |
| GDS | - | .14 | - | .220 |
| Last MA use (days) | - | −.02 | - | .845 |
| HCV status | - | .08 | - | .458 |
| LT MDD | - | −.20 | - | .087 |
Note. LT = lifetime; FrSBe = Frontal Systems Behavioral Scale; MDD = Major Depressive Disorder; GDS = Global deficit score; HCV = Hepatitis C virus; IADL = Instrumental activities of daily living; MA = methamphetamine;
a
MA+ group only (n = 73).