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. 2023 Jan 20;11:1058368. doi: 10.3389/fpubh.2023.1058368

Table 3.

Estimated ER and 95% CI of children's outpatient visits a 10 μg/m³ increase in the concentrations of air pollution stratified by season.

Pollutant	Whole	Season
		Cool	Warm
CO	0.19 (0.15 to 0.24)	0.16 (0.10 to 0.21)^*	0.08 (0.01 to 0.16)^*
NO₂	2.46 (2.00 to 2.92)	2.03 (1.52 to 2.55)^*	1.82 (0.86 to 2.80)^*
O₃	0.27 (0.07 to 0.46)	0.15 (−0.14 to 0.45)^*	0.29 (0.08 to 0.50)^*
SO₂	7.16 (4.80 to 9.57)	5.67 (2.86 to 8.57)^*	4.82 (0.95 to 8.85)^*
PM₁₀	1.16 (0.83 to 1.49)	0.74 (0.36 to 1.11)^*	1.00 (0.37 to 1.63)^*
PM_2.5	1.35 (0.88 to 1.82)	0.82 (0.29 to 1.36)^*	1.30 (0.41 to 2.20)^*

^*

The difference between groups was statistically significant.