. 2023 Apr 3;131(4):047003. doi: 10.1289/EHP11661

Table 3.

Pooled effects of cumulative air pollution exposure on asthma emergency department visits across all age groups ( $lowercase italic n equals 3190333$ ).

	Pollutant	IQR	Pooled RR (95% CI)
Distributed lags 0–2
PM	$particulate matter begin subscript 2.5 end subscript$	$6.3 micrograms per meter cubed$	1.013 (1.007, 1.020)
PM	$particulate matter begin subscript 10 to 2.5 end subscript$	$9.6 micrograms per meter cubed$	1.011 (1.007, 1.016)
Major $particulate matter begin subscript 2.5 end subscript$ components	EC	$0.5 microgram per meter cubed$	1.005 (1.001, 1.008)
	OC	$2.8 micrograms per meter cubed$	1.009 (1.005, 1.012)
	Nitrate	$1.7 micrograms per meter cubed$	1.002 (0.999, 1.005)
	Sulfate	$1.8 micrograms per meter cubed$	1.008 (1.005, 1.012)
Gaseous pollutants	$O_{3}$	$0.02 part per million$	1.022 (1.014, 1.030)
	${NO}_{x}$	$47.6 parts per billion$	0.996 (0.991, 1.002)
	${NO}_{2}$	$18.9 parts per billion$	1.004 (0.995, 1.012)
	CO	$0.5 part per million$	1.003 (0.998, 1.009)
	${SO}_{2}$	$4.2 parts per billion$	1.001 (0.997, 1.005)
Distributed lags 3–6
PM	$particulate matter begin subscript 2.5 end subscript$	$6.3 micrograms per meter cubed$	1.007 (1.002, 1.011)
PM	$particulate matter begin subscript 10 to 2.5 end subscript$	$9.6 micrograms per meter cubed$	1.014 (1.008, 1.021)
Major $particulate matter begin subscript 2.5 end subscript$ components	EC	$0.5 microgram per meter cubed$	1.006 (1.000, 1.012)
	OC	$2.8 micrograms per meter cubed$	1.010 (1.005, 1.016)
	Nitrate	$1.7 micrograms per meter cubed$	1.001 (0.998, 1.005)
	Sulfate	$1.8 micrograms per meter cubed$	1.001 (0.996, 1.006)
Gaseous pollutants	$O_{3}$	$0.02 part per million$	1.002 (0.991, 1.012)
	${NO}_{x}$	$47.6 parts per billion$	1.010 (1.005, 1.016)
	${NO}_{2}$	$18.9 parts per billion$	1.019 (1.011, 1.027)
	CO	$0.5 part per million$	1.007 (0.999, 1.016)
	${SO}_{2}$	$4.2 parts per billion$	1.004 (0.999, 1.009)
Distributed lags 0–7
PM	$particulate matter begin subscript 2.5 end subscript$	$6.3 micrograms per meter cubed$	1.016 (1.008, 1.025)
PM	$particulate matter begin subscript 10 to 2.5 end subscript$	$9.6 micrograms per meter cubed$	1.014 (1.007, 1.020)
Major $particulate matter begin subscript 2.5 end subscript$ components	EC	$0.5 microgram per meter cubed$	1.010 (1.002, 1.018)
	OC	$2.8 micrograms per meter cubed$	1.016 (1.009, 1.024)
	Nitrate	$1.7 micrograms per meter cubed$	1.004 (0.999, 1.009)
	Sulfate	$1.8 micrograms per meter cubed$	1.008 (1.001, 1.015)
Gaseous pollutants	$O_{3}$	$0.02 part per million$	1.008 (0.995, 1.022)
	${NO}_{x}$	$47.6 parts per billion$	1.013 (1.005, 1.020)
	${NO}_{2}$	$18.9 parts per billion$	1.025 (1.012, 1.039)
	CO	$0.5 part per million$	1.013 (1.001, 1.026)
	${SO}_{2}$	$4.2 parts per billion$	1.007 (0.999, 1.014)

Note: CI, credible interval; CO, carbon monoxide; EC, elemental carbon; IQR, interquartile range; OC, organic carbon; PM, particulate matter; RR, rate ratio.