Correction: Associations between socio-economic factors and alcohol consumption: A population survey of adults in England

Alcohol Misuse among English Youth, Are Harms Attributable to Alcohol or to Underlying Disinhibitory Characteristics?

INTRODUCTION

Alcohol use by young people is associated with a range of psychological and physical harms. However, similar harms are also reported with disinhibitory conditions such as conduct problems that are said to precede and predispose to alcohol misuse. We explored whether alcohol use or indicators of underlying disinhibition predict psychological and physical harms in a cohort of young people.

METHODS

We used data from a randomised controlled intervention trial that identified young people who consumed alcohol (n = 756), mean age = 15.6 years, attending emergency departments (EDs) in England. Disinhibition was measured by the self-report Strengths and Difficulties Questionnaire hyperactivity and conduct problem items, and alcohol-related harms by questions from the ESPAD, a major European school survey. We conducted a mediation analysis with a primary outcome of frequency of engaging in alcohol-related harms 12 months after screening in ED, exploring for the mediating influence of alcohol consumed at six months. We included age, gender, allocated group and baseline consumption as covariates and adjusted for the multi-level nature of the study, where young people were nested within EDs.

RESULTS

Conduct problems and to a lesser extent hyperactivity predicted harms at twelve months. This effect was not mediated by alcohol consumed at 6 months.

CONCLUSIONS

Among young drinkers underlying behavioural attributes predict harm independently of alcohol use. This suggests that the harms associated with alcohol use are attributable more to underlying disinhibitory characteristics than the quantity of alcohol consumed.

The impact of celebrity influence and national media coverage on users of an alcohol reduction app: a natural experiment

BACKGROUND

Smartphone apps are increasingly used for health-related behaviour change and people discover apps through different sources. However, it is unclear whether users differ by mode of app discovery. Drink Less is an alcohol reduction app that received national media coverage in the UK caused by celebrity influence (a male TV and radio national broadcaster, aged 51). Our aim was to compare users who discovered the app before and after this coverage.

METHODS

A natural experiment assessing the impact of media coverage of Drink Less on users' socio-demographic and drinking characteristics, app engagement levels, and extent of alcohol reduction. The study period was from 17th May 2017 to 23rd January 2019, with media coverage starting on 21st August 2018. Users were 18 years or over, based in the UK and interested in drinking less. Interrupted time series analyses using Generalised Additive Mixed Models were conducted for each outcome variable aggregated at the weekly level.

RESULTS

In 66 weeks prior to the media coverage, 8617 users downloaded the app and 18,959 in 23 weeks afterwards. There was a significant step-level increase in users' mean age (B = 8.17, p < .001) and a decrease in the percentage of female users (B = -27.71, p < .001), though these effects dissipated non-linearly over time. No effect of media coverage was detected on employment type or on the percentage of at-risk drinkers, though the mean Alcohol Use Disorders Identification Test score was lower after the media coverage (B = -1.43, p = .031). There was a step-level increase in app engagement - number of sessions (B = 3.45, p = .038) and number of days used (B = 2.30, p = .005) - which continued to increase over time following quadratic trends.

CONCLUSIONS

Celebrity influence leading to national media coverage in the UK of the Drink Less app was associated with more people downloading the app who were male, older and engaged with the app; and did not appear to impact employment inequality.