Maya Goerzen, Andrea Gruneir, Deniz Cetin-Sahin, Claire Godard-Sebillotte, Eric Smith, Pamela Roach, Julia Kirkham, Dallas Seitz
{"title":"加拿大阿尔伯塔省痴呆症患者COVID-19 30天死亡率的危险因素：一项回顾性队列研究","authors":"Maya Goerzen, Andrea Gruneir, Deniz Cetin-Sahin, Claire Godard-Sebillotte, Eric Smith, Pamela Roach, Julia Kirkham, Dallas Seitz","doi":"10.1186/s12877-025-06448-w","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>People living with dementia (PLWD) were disproportionately impacted by the COVID-19 pandemic, experiencing high mortality rates in the initial waves. However, factors contributing to their increased risk of death following COVID-19 infection remain unclear. Given that PLWD are a heterogenous population with varying susceptibility to negative health outcomes, this study aimed to identify independent factors associated with 30-day COVID-19 mortality among PLWD and vulnerable subgroups of PLWD.</p><p><strong>Methods: </strong>We conducted a retrospective cohort analysis using administrative data from March 1st 2020 to December 1st 2020, in Alberta, Canada. We examined the association between an outcome variable created to examine mortality in the 30-days following COVID-19 infection and factors related to the demographics and health (e.g., age, comorbidities), health service use (e.g., past physician utilization), and environment (e.g., community or long-term care) of PLWD in our study cohort and subgroups of our study cohort based on age, sex, and living setting (community, long-term care).</p><p><strong>Results: </strong>Among our study cohort of PLWD (N = 1526), 28% of individuals died within 30 days following COVID-19 infection. After adjusting for confounders, increasing age (AOR = 2.38, 95% CI: 1.12-5.06), male sex (AOR = 2.30, 95% CI: 1.76-3.01), and living in long-term care (AOR = 5.91, 95% CI: 4.49-7.79) were associated with a higher risk of 30-day COVID-19 mortality. Additionally, congestive heart failure, diabetes with complications, and renal failure were linked to mortality among certain subgroups of PLWD.</p><p><strong>Conclusions: </strong>The 30-day COVID-19 case fatality rate was high among PLWD. PLWD who were older, male, and living in long-term care were at the greatest risk. The findings of this study demonstrate that specific groups of PLWD, based on both demographic and site-of-care-related factors, would benefit most from improved attention in future infectious disease public health planning.</p>","PeriodicalId":9056,"journal":{"name":"BMC Geriatrics","volume":"25 1","pages":"745"},"PeriodicalIF":3.8000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12482559/pdf/","citationCount":"0","resultStr":"{\"title\":\"Risk factors for 30-day COVID-19 mortality among people living with dementia in Alberta, Canada: a retrospective cohort study.\",\"authors\":\"Maya Goerzen, Andrea Gruneir, Deniz Cetin-Sahin, Claire Godard-Sebillotte, Eric Smith, Pamela Roach, Julia Kirkham, Dallas Seitz\",\"doi\":\"10.1186/s12877-025-06448-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>People living with dementia (PLWD) were disproportionately impacted by the COVID-19 pandemic, experiencing high mortality rates in the initial waves. However, factors contributing to their increased risk of death following COVID-19 infection remain unclear. Given that PLWD are a heterogenous population with varying susceptibility to negative health outcomes, this study aimed to identify independent factors associated with 30-day COVID-19 mortality among PLWD and vulnerable subgroups of PLWD.</p><p><strong>Methods: </strong>We conducted a retrospective cohort analysis using administrative data from March 1st 2020 to December 1st 2020, in Alberta, Canada. We examined the association between an outcome variable created to examine mortality in the 30-days following COVID-19 infection and factors related to the demographics and health (e.g., age, comorbidities), health service use (e.g., past physician utilization), and environment (e.g., community or long-term care) of PLWD in our study cohort and subgroups of our study cohort based on age, sex, and living setting (community, long-term care).</p><p><strong>Results: </strong>Among our study cohort of PLWD (N = 1526), 28% of individuals died within 30 days following COVID-19 infection. After adjusting for confounders, increasing age (AOR = 2.38, 95% CI: 1.12-5.06), male sex (AOR = 2.30, 95% CI: 1.76-3.01), and living in long-term care (AOR = 5.91, 95% CI: 4.49-7.79) were associated with a higher risk of 30-day COVID-19 mortality. Additionally, congestive heart failure, diabetes with complications, and renal failure were linked to mortality among certain subgroups of PLWD.</p><p><strong>Conclusions: </strong>The 30-day COVID-19 case fatality rate was high among PLWD. PLWD who were older, male, and living in long-term care were at the greatest risk. 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Risk factors for 30-day COVID-19 mortality among people living with dementia in Alberta, Canada: a retrospective cohort study.
Background: People living with dementia (PLWD) were disproportionately impacted by the COVID-19 pandemic, experiencing high mortality rates in the initial waves. However, factors contributing to their increased risk of death following COVID-19 infection remain unclear. Given that PLWD are a heterogenous population with varying susceptibility to negative health outcomes, this study aimed to identify independent factors associated with 30-day COVID-19 mortality among PLWD and vulnerable subgroups of PLWD.
Methods: We conducted a retrospective cohort analysis using administrative data from March 1st 2020 to December 1st 2020, in Alberta, Canada. We examined the association between an outcome variable created to examine mortality in the 30-days following COVID-19 infection and factors related to the demographics and health (e.g., age, comorbidities), health service use (e.g., past physician utilization), and environment (e.g., community or long-term care) of PLWD in our study cohort and subgroups of our study cohort based on age, sex, and living setting (community, long-term care).
Results: Among our study cohort of PLWD (N = 1526), 28% of individuals died within 30 days following COVID-19 infection. After adjusting for confounders, increasing age (AOR = 2.38, 95% CI: 1.12-5.06), male sex (AOR = 2.30, 95% CI: 1.76-3.01), and living in long-term care (AOR = 5.91, 95% CI: 4.49-7.79) were associated with a higher risk of 30-day COVID-19 mortality. Additionally, congestive heart failure, diabetes with complications, and renal failure were linked to mortality among certain subgroups of PLWD.
Conclusions: The 30-day COVID-19 case fatality rate was high among PLWD. PLWD who were older, male, and living in long-term care were at the greatest risk. The findings of this study demonstrate that specific groups of PLWD, based on both demographic and site-of-care-related factors, would benefit most from improved attention in future infectious disease public health planning.
期刊介绍：
BMC Geriatrics is an open access journal publishing original peer-reviewed research articles in all aspects of the health and healthcare of older people, including the effects of healthcare systems and policies. The journal also welcomes research focused on the aging process, including cellular, genetic, and physiological processes and cognitive modifications.
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