Air Pollutants, Climate, and the Prevalence of Pediatric Asthma in Urban Areas of China

Table 4

The relationships among air pollutants, climatic factors, and asthma prevalence by Pearson correlation coefficient.

Variables	Asthma prevalence	PM10	SO2	NO2	Relative; humidity	Air; temperature	Precipitation	Hours of sunshine
Asthma prevalence	1	−0.101	−0.323	0.261	0.351	0.289	0.273	−0.476
PM10		1	0.607	−0.023	−0.308	−0.551	−0.529	0.231
SO2			1	0.050	−0.213	−0.480	−0.500	0.225
NO2				1	0.029	−0.061	−0.037	−0.157
Relative humidity					1	0.668	0.740	−0.771
Air; temperature						1	0.821	−0.635
Precipitation							1	−0.577
Hours of sunshine								1

Note. PM10: particulates with an aerodynamic diameter of 10 mm; SO₂: sulfur dioxide; NO₂: nitrogen dioxide. p < 0.05. p < 0.01.