Environmental Public Health Commons^™

Examining Public Health Risk Communication Via Social Media By Provincial And Local Health Authorities In Ontario During The Covid-19 Pandemic, Marc Resendes

Electronic Thesis and Dissertation Repository

Risk communication campaigns are essential during public health crises to inform the public about ways to mitigate, alleviate and manage potential risks. The purpose of this study was to describe risk communication on social media by Ontarian health authorities amid COVID-19, in addition to examining the strategies that guided their social media use. This was completed through (a) a narrative review of risk communication literature; (b) a qualitative content analysis of select health authority Twitter messaging following three major COVID-19 milestones; and (c) key informant interviews with those coordinating social media responses to COVID-19. Information giving and news updates were …

Association Between Air Pollution And Incidence Of Dementia: A Systematic Review And Meta-Analysis Of Cohort Studies, Ehsan Abolhasani

Electronic Thesis and Dissertation Repository

Objective. To estimate the risk of dementia in association with exposure to air pollutants.

Methods. Six databases were searched. Cohort studies that reported the hazard ratio (HR) of dementia in association with exposure to air pollutants in adults > 40y were included. For all meta-analyses, the random-effects model was used.

Results. A total of 16 and 13 studies were included in the systematic review and the meta-analysis, respectively. Risk of dementia increased by 4% per 1μg/m³ increase in fine particulate matter level (HR, 1.04; 95%CI, [1.02, 1.06]), which was statistically significant. The risk of dementia increased by 3% per 10μg/m …