J Nutr Health.  2024 Feb;57(1):153-169. 10.4163/jnh.2024.57.1.153.

The association between COVID-19 and changes in food consumption in Korea: analyzing the microdata of household income and expenditure from Statistics Korea 2019–2022

• Eom H
• Kim K
• Cho S
• Moon J

• KMID: 2553700
• DOI: http://doi.org/10.4163/jnh.2024.57.1.153

Abstract

Purpose
The main goal of this study was to identify the impact of coronavirus disease 2019 (COVID-19) on grocery purchases (i.e., fresh and processed foods by grain, vegetable, fruit, seafood, and meat categories) in Korea. To understand the specific impact of COVID-19, the study period was divided into 3 segments: PRE-COVID-19, INTER-COVID-19, and POST-COVID-19.
Methods
We used the microdata of household income and expenditure from Statistics Korea (KOSTAT), representing households across the country. The data comprised monthly grocery expenditure data from January 2019 to September 2022. First, we compared the PRECOVID-19 period to INTER-COVID-19 and then INTER-COVID-19 to POST-COVID-19 and used multiple regression analysis. The covariates used were the gender and age of the head of the household, the household’s monthly income, the number of family members, the price index, and the month (dummy variable).
Results
The expenditures on all grocery categories except fresh fruit increased from PRE-COVID-19 to INTER-COVID-19. From INTER-COVID-19 to POST-COVID-19, almost all grocery category spending declined, with processed meat being the only exception. Most purchases of protein sources, increased during INTER-COVID-19 compared to PRECOVID-19, while ham/sausage/bacon for meat protein, fish cakes and canned seafood for seafood protein, and soy milk for plant-based protein did not decrease during POSTCOVID-19 compared to INTER-COVID-19.
Conclusion
These results show an overall increase in in-home grocery expenditure during COVID-19 due to an increase in eating at home, followed by a decrease in this expenditure in the POST-COVID-19 period. Among the trends, the protein and highly processed convenience food categories did not see a decline in spending during the POST-COVID-19 period, which is a reflection of the preferences of consumers in the post-COVID-19 period.

Keyword

COVID-19; nutrients; processed foods; proteins; expenditures