Table 5.
Robust regression unstandardized coefficients (
), standard errors (SE), and proportion of variances (R2Δ) in neuropsychological functioning accounted for by significant predictors
| Variable | Variable memory |
Visuospatial functioning |
Psychomotor speed |
Processing speed |
Working memory |
|||||
| β (SE) | R2 Δ | β (SE) | R2 Δ | β (SE) | R2 Δ | β (SE) | R2 Δ | β (SE) | R2 Δ | |
| Covariates | ||||||||||
| Baseline NP | .39 (.06) | .14 | .62 (.06) | .31 | .49 (.06) | .18 | .79 (.06) | .34 | .67 (.04) | .40 |
| Agea | .17 (.04) | .07 | .14 (.03) | .07 | .09 (.02) | .05 | -.10 (.03) | .01 | – | – |
| Abstinence | – | – | – | – | – | – | – | – | – | – |
| Gender | – | – | – | – | – | – | – | – | .17 (.07) | .01 |
| Socioeconomic statusb | -.01 (.004) | .03 | – | – | – | – | – | – | – | – |
| Alcohol use | ||||||||||
| Frequency & quantity | -.14 (.07) | .01 | -.15 (.06) | .02 | – | – | – | – | .09 (.04) | .002 |
| Postdrinking effects | – | – | – | – | -.11 (.04) | .01 | – | – | – | – |
| Other drug involvement | – | – | – | – | -.08 (.04) | .01 | – | – | – | – |
| Full model R2 | .26 | .39 | .19 | .40 | .51 | |||||
Notes: NP = neuropsychological performance.
a
At follow-up time point;
b
Hollingshead Index of Social Position score. Higher values indicate lower socioeconomic status.