Alcohol home delivery usage and its relationship to alcohol consumption in New South Wales during COVID-19

Background: Rapid growth in the use of alcohol home delivery services, combined with increases in home drinking during COVID-19, raises potential concerns around increased consumption. This paper aims to assess the relationship between alcohol home delivery use and consumption across levels of COVID-19 restrictions in New South Wales (NSW), Australia. Methods: A 5-wave longitudinal survey of 586 NSW residents (Mage = 35; 65.3% female)  conveniently sampled across 2020. Home delivery usage and the number of daily standard drinks consumed during a typical week were assessed with a survey. Logistic regression models were estimated within each wave to identify predictors of home delivery usage, and hierarchical logistic mixed effects models were estimated to predict purchase source (home delivery vs other) at the occasion level. Results: From baseline, alcohol home delivery use rose significantly during lockdown (20% to 34%), with respondents using home delivery during lockdown and the partial re-opening wave consuming significantly more than those who were not. Use of home delivery was significantly higher during lockdown and the partial re-opening amongst people who drank more heavily, with respondents aged 36 or older more likely to use delivery services in all waves except lockdown. Conclusions: Alcohol home delivery usage increased during lockdown suggesting restrictions impeding on-premise consumption coincided with an increase in home delivery. Associations between persons who drink more heavily and use of home delivery during lockdown and the partial re-opening suggest a subset of the population that may be at increased risk of harmful consumption when accessing alcohol delivery services.