A polarisation rather than just an increase or a decrease - Exploring different approaches to measure the impact of the COVID-19 pandemic on alcohol consumption after one year
Polarisation of drinking behaviours during COVID
Abstract
Background
Many studies on the impact of the COVID-19 pandemic reported that significant proportions of drinkers have either increased or decreased their consumption. These diverging trends may indicate a polarisation of drinking behaviours, suggesting that the same source of stress caused some people to drink more and others to drink less, among the same segment of the population. This study aims to explore the existence of such a polarisation by using standard statistical methods to assess data on drinking behaviour from March 2021, one year after the onset of the pandemic.
Methods
A representative sample of 2’000 people in Switzerland were asked to retrospectively report their drinking behaviours during the year before the introduction of the measures to contain the COVID-19 pandemic (April 2019–March 2020) and during the first year of the pandemic (April 2020–March 2021), as well as multiple aspects of their living conditions.
Results
A polarisation of drinking behaviours was observed among many segments of the populations, particularly among young adults (15-24 years old), those with increased fear of COVID-19 for oneself or for their financial situation, and those who experienced a precarious work situation. Chi-square test and regressions models, using the absolute value of the change in drinking habits, are suitable for measuring polarisation effects.
Conclusions
The polarisation of drinking behaviours occurred in some segments of the population, regardless of their pre-pandemic drinking habits. However, polarisation can only be properly measured when non-linear trends are investigated.
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