Comparison of socio-economic determinants of COVID-19 testing and positivity in Canada: A multi-provincial analysis

SARS-CoV-2 testing, test positivity and vaccination in social housing residents compared with the general population: a retrospective population-based cohort study

BACKGROUND

The consideration of unique social housing needs has largely been absent from the COVID-19 response, particularly in tailoring strategies to improve access to testing and vaccine uptake among vulnerable and high-risk populations in Ontario. Given the growing population of social housing residents, this study aimed to compare SARS-CoV-2 testing, positivity, and vaccination rates in a social housing population with those in a general population cohort in Ontario, Canada.

METHODS

This population-based cohort study used administrative health data from Ontario to examine SARS-CoV-2 testing, positivity and vaccination rates in social housing residents compared with the general population from 1 January 2020 to 31 December 2021. All comparisons were unadjusted, stratified by sex and age and evaluated using standardised differences.

RESULTS

The rates of SARS-CoV-2 PCR testing were lower among younger age groups and higher among older adults within the social housing cohort, compared with the general population cohort. SARS-CoV-2 test positivity was higher in social housing than in the general population among individuals aged 60-79 years (7.9% vs 5.3%, respectively) and 80 years and older (12.0% vs 7.9%, respectively). Overall, 34.3% of social housing residents were fully vaccinated, compared with 29.6% of the general population cohort. However, a smaller proportion of social housing residents had received a booster vaccine (36.7%) compared with the general population (52.4%).

CONCLUSION

Improved and targeted outreach strategies are needed to increase the uptake of COVID-19 booster vaccines among social housing residents.

Quantifying the magnitude of the general contextual effect in a multilevel study of SARS-CoV-2 infection in Ontario, Canada: application of the median rate ratio in population health research

BACKGROUND

Regional variations in SARS-CoV-2 infection were observed in Canada and other countries. Studies have used multilevel analyses to examine how a context, such as a neighbourhood, can affect the SARS-CoV-2 infection rates of the people within it. However, few multilevel studies have quantified the magnitude of the general contextual effect (GCE) in SARS-CoV-2 infection rates and assessed how it may be associated with individual- and area-level characteristics. To address this gap, we will illustrate the application of the median rate ratio (MRR) in a multilevel Poisson analysis for quantifying the GCE in SARS-CoV-2 infection rates in Ontario, Canada.

METHODS

We conducted a population-based, two-level multilevel observational study where individuals were nested into regions (i.e., forward sortation areas [FSAs]). The study population included community-dwelling adults in Ontario, Canada, between March 1, 2020, and May 1, 2021. The model included seven individual-level variables (age, sex, asthma, diabetes, hypertension, congestive heart failure, and chronic obstructive pulmonary disease) and four FSA census-based variables (household size, household income, employment, and driving to work). The MRR is a median value of the rate ratios comparing two patients with identical characteristics randomly selected from two different regions ordered by rate. We examined the attenuation of the MRR after including individual-level and FSA census-based variables to assess their role in explaining the variation in rates between regions.

RESULTS

Of the 11 789 128 Ontario adult community-dwelling residents, 343 787 had at least one SARS-CoV-2 infection during the study period. After adjusting for individual-level and FSA census-based variables, the MRR was attenuated to 1.67 (39% reduction from unadjusted MRR). The strongest FSA census-based associations were household size (RR = 1.88, 95% CI: 1.71-1.97) and driving to work (RR = 0.68, 95% CI: 0.65-0.71).

CONCLUSIONS

The individual- and area-level characteristics in our study accounted for approximately 40% of the between-region variation in SARS-CoV-2 infection rates measured by MRR in Ontario, Canada. These findings suggest that population-based policies to address social determinants of health that attenuate the MRR may reduce the observed between-region heterogeneity in SARS-CoV-2 infection rates.

Health Resilience in Arabic-speaking Adult Refugees With Type 2 Diabetes: A Grounded Theory Study During the COVID-19 Pandemic

OBJECTIVES

This qualitative study aimed to describe the lived experiences of Arabic-speaking refugees in managing their type 2 diabetes mellitus (T2DM) while resettling during the COVID-19 pandemic, and to generate a grounded theory of how resilience is used to facilitate living well while facing multiple health stressors.

METHODS

A grounded theory approach was used to conceptualize the dynamic process of resilience in living well with diabetes. Five recently resettled adult refugees with T2DM (2 women and 3 men) participated in unstructured individual interviews in Arabic in New Brunswick, Canada, during the pandemic's second wave (October 2020 to March 2021). Interview data were transcribed and analyzed thematically using open, axial, and core category coding followed by member checking.

RESULTS

Participants identified self-reliance as the core driver for decision-making, actions, and interpretations in health management while experiencing unplanned instability. The process was found to be facilitated by 4 distinct constructs: knowledge seeking, positive outlook, self-care, and creativity.

CONCLUSIONS

The substantive model derived from this study supports a strengths-based approach to clinical assessment and care of refugees with T2DM, notably during disrupted access to primary and preventive services due to forced resettlement and pandemic mitigation measures. More research is needed to increase understanding of how self-reliance can be optimized in resilience-promoting interventions to facilitate diabetes management among populations in posttraumatic circumstances.