2017
	Yes
	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5287434/
	Sunyer, Jordi
	Europe
	Observational
	Epidemiology Study
	Students
	Elementary (K-5)
	Temperature
	Humidity
	Nitrogen Dioxide (NO2)
	Test performance
	Daily ambient levels of both NO2 and EC were negatively associated with all attention processes (e.g., children in the bottom quartile of daily exposure to ambient NO2 levels had a 14.8 msecond [95% confidence interval, 11.2, 18.4] faster response time than those in the top quartile, which was equivalent to a 1.1-month [0.84, 1.37] retardation in the natural developmental improvement in response speed with age). Similar findings were observed after adjusting for the average indoor (classroom) levels of pollutants. Associations for EC were similar to those for NO2 and robust to several sensitivity analyses