Disparities in greenspace associated with sleep duration among adolescent children in Southern California

Environmental Epidemiology · 7 authors, 2 centres

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TL;DR

Using questionnaires from 2010, the study assessed sleep duration, trouble sleeping, and perceived stress.

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Using questionnaires from 2010, the study assessed sleep duration, trouble sleeping, and perceived stress. No significant association was found for high SES participants. Results support the hypothesis that access to greenspace may help mitigate sleep disparities in socioeconomically disadvantaged youth.

STUDY TYPE

cross-sectional

SPECIALTY

epidemiology

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100% · A

ORIGINAL PAPER

PMC10402945

Disparities in greenspace associated with sleep duration among adolescent children in Southern California

Environmental Epidemiology

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ABSTRACT

Background: More than half of adolescent children do not get the recommended 8 hours of sleep necessary for optimal growth and development. In adults, several studies have evaluated effects of urban stressors including lack of greenspace, air pollution, noise, nighttime light, and psychosocial stress on sleep duration. Little is known about these effects in adolescents, however, it is known that these exposures vary by socioeconomic status (SES). We evaluated the association between several environmental exposures and sleep in adolescent children in Southern California. Methods: In 2010, a total of 1476 Southern California Children’s Health Study (CHS) participants in grades 9 and 10 (mean age, 13.4 years; SD, 0.6) completed a questionnaire including topics on sleep and psychosocial stress. Exposures to greenspace, artificial light at night (ALAN), nighttime noise, and air pollution were estimated at each child’s residential address, and SES was characterized by maternal education. Odds ratios and 95% confidence intervals (95% CIs) for sleep outcomes were estimated by environmental exposure, adjusting for age, sex, race/ethnicity, home secondhand smoke, and SES. Results: An interquartile range (IQR) increase in greenspace decreased the odds of not sleeping at least 8 hours (odds ratio [OR], 0.86 [95% CI, 0.71, 1.05]). This association was significantly protective in low SES participants (OR, 0.77 [95% CI, 0.60, 0.98]) but not for those with high SES (OR, 1.16 [95%CI, 0.80, 1.70]), interaction P = 0.03. Stress mediated 18.4% of the association among low SES participants. Conclusions: Residing in urban neighborhoods of greater greenness was associated with improved sleep duration among children of low SES but not higher SES. These findings support the importance of widely reported disparities in exposure and access to greenspace in socioeconomically disadvantaged populations. Keywords: Artificial light at night, Children, Circadian rhythm, Epidemiology, Green space, Sleep disruption

CITATION EXPORT

Charlie Zhong, Xiaozhe Yin, Masoud Fallah-Shorshani et al.. Disparities in greenspace associated with sleep duration among adolescent children in Southern California. Environmental Epidemiology. (2023). https://doi.org/10.1097/EE9.0000000000000264

AUTHORS

7 · 2 CENTRES

Charlie Zhong, Xiaozhe Yin, Masoud Fallah-Shorshani, Talat Islam, Rob McConnell, Scott Fruin, Meredith Franklin

aDepartment of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
bDepartment of Statistical Sciences and School of the Environment, University of Toronto, Toronto, Ontario, Canada