Exploring socio-environmental effects on community health in Edmonton, Canada to understand older adult and immigrant risk in a changing climate

We investigated health risks associated with climate and air pollution hazards and community covariates to generate insights into the resilience of older adults and immigrants at the community level in a northern urban center in the Canadian prairies. Communities with higher proportions of older adults were associated with increased cardiovascular, injury, mental, and respiratory health event rates. Notably, heat effects on injury rates impacted communities with higher percentages of older adults (Prevalence Rate Ratio (PRR) [95%CI] 1.110 [1.011, 1.219] at 25% ≥65 years). Ozone effects on cardiovascular event rates exhibited similar trends. Areas with higher percentages of immigrants generally had lower rates of hxealth events. However, increasing diurnal temperature range became a risk factor for respiratory health rates where there were higher percentages of refugees (PRR 1.205 [1.004, 1.447] at 20%). Industrial emission effects on injury and respiratory health rates also amplified in areas with higher percentages of refugees (PRR 1.127 [1.058, 1.200]; 1.130 [1.050, 1.216] at 20%). Similar effects were observed for mental health event rates and total immigrants. Greater neighborhood material and social deprivation were significant risk factors for increased health event rates across outcomes. Future work should focus on disproportionately affected vulnerable populations to address community-level resilience.