Researchers categorized participants into 1 of 3 groups: binge drinkers, non-binge drinkers, or non-drinkers. The factors analyzed were:
- Length of time spent in lockdown
- How many adults or children they were living with
- Current or previous episodes of depression
- Job status related to lockdown (eg, decreased pay, temporarily laid off)
Overall, 34% of the sample reported binge drinking during the pandemic, and the odds of increased alcohol intake for binge drinkers was more than double that of non-drinkers (60% vs 28%).
- On average, binge drinkers drank 4 drinks per occasion vs 2 drinks among non-binge drinkers.
- Participants who drank at harmful levels would consume 7 drinks maximum on 1 occasion vs a maximum of 2 per session for those who did not.
- Living with children minimally reduced the odds (by 26%) of drinking for people in general.
After adjusting for sociodemographics, results showed for every 1-week increase in time spent at home during COVID-19, there was 1.21 (95% confidence interval [CI]: 1.08-1.35) greater odds of binge drinking.
Also, binge drinkers with a previous diagnosis of depression and current depression symptoms had greater odds of increased alcohol intake vs those who did not (adjusted odds ratio=1.80, 95% CI: 1.15-2.81).
Limitations to the study include the survey data being self-reported, the fact that the survey question on binge-drinking did not specify a time within which the alcohol was consumed, and the majority (70%) of participants were relatively high earners (a factor already linked to hazardous alcohol intake).
“Future research should consider the potential for depressive symptoms acting as a moderator (a factor that changes the impact) in the relation between the time spent under a shelter-in-place mandate (lockdown) and binge drinking,” said co-author Sitara Weerakoon, a PhD candidate from the University of Texas Health Science Center in a press release. “Additional research is (also) needed to develop best treatment for people with substance use disorders who may be more susceptible to adverse health outcomes.”