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Alcohol expectancy, impulsivity predict problem drinking

09 Sep 2017

Problem drinking is best predicted by alcohol expectancy in females and by Barratt impulsivity combined with expectancy in males, a recent study shows.

Volume and frequency of alcohol consumption of 158 social drinkers (mean age 29.8±10.6 years; 86 females) were evaluated using the Alcohol Use Disorders Identification Test (AUDIT). Participants also accomplished the Alcohol Expectancy Questionnaire and the Barrett Impulsivity Scale.

The Computational Anatomy Toolbox was used to perform voxel-based morphometry to determine differences in brain tissue composition and its effects of behaviour and cognition.

The mean AUDIT score was 5.2±4.2, which suggests a moderate level of problem drinking. The mean global positive (GP) alcohol expectancy was 10.8±4.1, while the mean Barratt Impulsivity Scale (BIS) score was 60.3±9.1. Males scored slightly higher in the BIS than females.

AUDIT scores were significantly positively correlated with GP (p=3.2 × 10−12), BIS (p=7.4 × 10−4) and both GP and BIS (GPxBIS; p=5.9 × 10−14) in the entire cohort. These trends were retained in males (p=8.2×10−6 for GP; p=2.5×10−3 for BIS; p=9.1×10−7 for GPxBIS).

In contrast, only GP (p=8.3×10−9) and GPxBIS (p=1.9×10−8) were significantly correlated with AUDIT scores in females. Comparing regression slopes showed that the association between BIS scores and AUDIT was significantly lower in females (p=0.045).

General linear models controlling for age showed that GP was the best predictor for problem drinking. This was followed by BISxGP for males, females and both sexes combined. GP was the poorest predictor of problem drinking.

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Most Read Articles
5 days ago
There appears to be an association between waterpipe tobacco smoking and gastro-oesophageal reflux disease (GERD), which is a known risk factor for oesophageal adenocarcinoma, a study has shown.
Tristan Manalac, 6 days ago
An 8-week regimen of sofosbuvir-velpatasvir-voxilaprevir combination is not noninferior to a 12-week regimen of sofosbuvir-velpatasvir for patients with chronic hepatitis C virus (HCV) infection, report two recent phase 3 open-label trials.
2 days ago
The additional use of intermittent low-energy diet (LED) or daily meal replacements after a mean 10-percent weight loss and 1-year maintenance effectively maintains weight loss in obese patients with knee osteoarthritis for 3 years, according to a recent study.
5 days ago
A recent study has found that food bolus impaction or strictures predict most episodes of oesophageal perforation, a rare but serious complication of eosinophilic esophagitis (EoE) that occurs in about 2 percent of cases. This suggests that patients with fibrostenotic disease due to longer duration of symptoms are at increased risk.