Study protocol for CELLAR (COVID-related Eating Limitations and Latent dietary effects in the Atlantic Region): population-based observational study to monitor dietary intakes and purchasing during COVID-19 in four Atlantic Canadian provinces

BMJ Open · 14 authors, 9 centres

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TL;DR

This protocol describes a planned observational study to measure dietary intakes and household food purchasing in Atlantic Canada during the COVID-19 pandemic. The central aim is to describe dietary patterns and compare them to a pre-pandemic baseline.

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This paper presents the study protocol for CELLAR, a population-based observational study aiming to monitor dietary intakes and household food purchasing in Atlantic Canada during the COVID-19 pandemic. The methods involve stratified probability sampling of residents from four provinces, with data collection over 12 weeks including two online 24-hour diet recalls and uploads of household food purchase receipts. The primary objectives are to describe current dietary intakes, compare them to pre-pandemic baseline data from 2015, and examine how purchasing practices predict intake. The study aims to recruit n=1000 participants. Key limitations and contextual factors noted include potential food price inflation, its inequitable impact on vulnerable households, and the pre-existing excess burden of dietary risk in the Atlantic region. As a protocol, no study results are reported; it outlines a methodology to address gaps in understanding pandemic-related dietary shifts.

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other

SPECIALTY

public health

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ORIGINAL PAPER

PMC10098265

Study protocol for CELLAR (COVID-related Eating Limitations and Latent dietary effects in the Atlantic Region): population-based observational study to monitor dietary intakes and purchasing during COVID-19 in four Atlantic Canadian provinces

BMJ Open

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ABSTRACT

Introduction Poor diet is a leading preventable risk for the global burden of non-communicable disease. Robust measurement is needed to determine the effect of COVID-19 on dietary intakes and consumer purchasing, given the widespread changes to consumer food environments and economic precarity. The research objectives are as follows: (1) describe dietary intakes of foods, beverages and nutrients of concern during the COVID-19 pandemic; (2) quantify change in diet during COVID-19 as compared with prepandemic, previously captured in the provincial samples of the population-representative 2015 Canadian Community Health Survey-Nutrition and (3) examine how household purchasing practices predict dietary intakes during COVID-19. Methods and analyses Observational study of diet, using a population-based stratified probability sampling strategy allocated via dual-frame (landline and cellphone) calls to random-digit dialled numbers, followed by age-sex group quotas. The base population comprises the four provinces of the Atlantic region of Canada, jurisdictions with an excess burden of pre-existing dietary risk, compared with the rest of Canada. Our aim is n=1000 to obtain reliable estimates at a regional level to describe intakes and compare with prepandemic baseline. Data collection entails 12 weeks participation: (1) enrolment with sociodemographics (key dietary risk predictors such as age, sex, gender, pre-COVID-19 income, employment, household composition, receipt of economic relief, rural residence); (2) two 24hour diet recalls using the online ASA-24 Canada 2018 tool; and (3) online uploads of household food purchase receipts over the 12 weeks enrolled. Participation incentives will be offered. Ethics and dissemination This research protocol received funding from the Canadian Institutes of Health Research (FRN VR5 172691) and ethics review approval from the Dalhousie University Research Ethics Board. Study protocol and instruments and a de-identified dataset will be made publicly available. We will submit the findings to peer-reviewed journals, as well as conferences geared towards scientific and decision-maker audiences.

CITATION EXPORT

Catherine L Mah, Karen Foster, Emily Jago et al.. Study protocol for CELLAR (COVID-related Eating Limitations and Latent dietary effects in the Atlantic Region): population-based observational study to monitor dietary intakes and purchasing during COVID-19 in four Atlantic Canadian provinces. BMJ Open. (2022). https://doi.org/10.1136/bmjopen-2022-061660

AUTHORS

14 · 9 CENTRES

Catherine L Mah, Karen Foster, Emily Jago, Mohammad Hajizadeh, Gabriella Luongo, Nathan Taylor, Daniel Fuller, Yanqing Yi, Olukorede T Esan, Ryan Lukic, Maria Clarke, Wiesława Dominika Wranik, Julie Kay Brimblecombe, Anna Peeters

1School of Health Administration, Dalhousie University, Halifax, Nova Scotia, Canada
2Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
3Department of Sociology and Social Anthropology, Dalhousie University, Halifax, Nova Scotia, Canada
4School of Human Kinetics and Recreation, Memorial University, St John's, Newfoundland and Labrador, Canada
5Department of Community Health and Humanities, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada
6Faculty of Management, Dalhousie University, Halifax, Nova Scotia, Canada
7Department of Nutrition, Dietetics and Food, Monash University, Melbourne, Victoria, Australia
8Wellbeing and Preventable Chronic Diseases Division, Menzies School of Health Research, Darwin, Northern Territory, Australia
9Institute for Health Transformation, Deakin University, Melbourne, Victoria, Australia