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Change in alcohol demand following a brief intervention predicts change in alcohol use: A latent growth curve analysis.


ABSTRACT:

Background

The association between behavioral economic demand and various alcohol use outcomes is well established. However, few studies have examined whether changes in demand occur following a brief alcohol intervention (BAI), and whether this change predicts alcohol outcomes over the long term.

Methods

Parallel process piecewise latent growth curve models were examined in a sample of 393 heavy drinking emerging adults (60.8% women; 85.2% white; Mage  = 18.77). In these models, two linear slopes represented rates of change in alcohol use, heavy drinking episodes, alcohol-related problems, and demand (intensity and highest expenditure across all price points or Omax ) from baseline to 1 month (slope 1) and 1 month to 16 months (slope 2). Mediation analyses were conducted to estimate the effect of a BAI on 16-month alcohol outcomes through slope 1 demand.

Results

A two-session BAI predicted significant reductions in all five outcomes from baseline to 1-month follow-up. Although no further reduction was observed from the 1-month to the 16-month follow-up, there was no regression to baseline levels. Slope 1 demand intensity, but not Omax , significantly mediated the association between BAI and both outcomes-heavy drinking episodes (Est. = -0.23, SE = 0.08, p < 0.01) and alcohol-related problems (Est. = -0.15, SE = 0.07, p < 0.05)-at the 16-month follow-up.

Conclusions

Reducing high valuation of alcohol among heavy drinking emerging adults within the first month following BAI is critical for the long-term efficacy of the intervention. A two-session BAI was associated with enduring reductions in alcohol demand, and the change in demand intensity, but not Omax , was associated with sustained reductions in heavy drinking and alcohol-related problems.

SUBMITTER: Gex KS 

PROVIDER: S-EPMC9427684 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature

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Change in alcohol demand following a brief intervention predicts change in alcohol use: A latent growth curve analysis.

Gex Kathryn S KS   Acuff Samuel F SF   Campbell Kevin W KW   Mun Eun-Young EY   Dennhardt Ashley A AA   Borsari Brian B   Martens Matthew P MP   Murphy James G JG  

Alcoholism, clinical and experimental research 20220630 8


<h4>Background</h4>The association between behavioral economic demand and various alcohol use outcomes is well established. However, few studies have examined whether changes in demand occur following a brief alcohol intervention (BAI), and whether this change predicts alcohol outcomes over the long term.<h4>Methods</h4>Parallel process piecewise latent growth curve models were examined in a sample of 393 heavy drinking emerging adults (60.8% women; 85.2% white; M<sub>age</sub>  = 18.77). In the  ...[more]

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