Association between urban greenness and sleep measures in Canadian adults: Findings from the Canadian Longitudinal Study of Aging
Year: 2021
Type: conference-abstract
Abstract: BACKGROUND AND AIM: A series of epidemiological studies have found that urban greenness may confer several health benefits, including improved sleep quality. In this study we explore the association between greenness and sleep quality among middle-age adults in a national Canadian cohort. METHODS: We conducted a cross-sectional analysis of 30,089 urban dwelling participants, 45 to 69 years of age, of the Canadian Longitudinal Study of Aging. We investigated the relationship between urban greenness (NDVI) and the three sleep measures – sleep quality satisfaction, sleep duration, and difficulty falling asleep. We included individual data on levels of physical activity, health status, and connection to their local neighbourhood, as well as contextual measures including air pollution, favourability of the neighbourhood for active living, and socioeconomic status. We conducted multinomial logistic regression to derive adjusted odds ratios and their 95% confidence intervals to describe associations between greenness at sleep measures. RESULTS:The analytic cohort included 27,276 participants, the majority of who were married or common-law, well educated, self-identified as white, and were born in Canada, which is in agreement with the demographic profile of the full CLSA cohort. Greenness exposure was higher among participants who were married/common-law, higher income and education, ethnically white, better general and mental health, never smokers, and a stronger connection to their neighbourhood. Multinomial logistic regression models adjusted for a set of a priori covariates according to each sleep outcome, based on socio-demographic characteristics, lifestyle factors, chronic disease, connection to neighbourhood, and stress. Multinomial logit models revealed greenness had a protective effect on sleep quality satisfaction and difficulty falling asleep (OR1); however, results were not statistically significant. CONCLUSIONS:Creating new green areas, as well as protecting and restoring current spaces, could have beneficial impacts on the sleep behaviour of middle-to-older aged adults residing in urban areas. KEYWORDS: Sleep, green space, NDVI, cross-sectional study, Canada, adults
Source: ISEE Conference Abstracts
Language: English
Topic: Urban Green Space and Health
Subfield: Health, Toxicology and Mutagenesis
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W3195710623