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

Table 5

Multiple linear regression analysis of risk factors and asthma prevalence in children.

Model	Unstandardized coefficients		Standardized coefficients		Sig.	Collinearity statistics
	B	Std. error	Beta			Tolerance	VIF
Constant	1.673	3.104		0.539	0.593
SO2	−19.572	9.654	−0.271	−2.027	0.050	0.930	1.075
Relative humidity	−0.036	0.028	−0.291	−1.294	0.204	0.329	3.041
Hours of sunshine	−0.014	0.006	−0.458	−2.256	0.030	0.402	2.489

Note. PM10: particulates with an aerodynamic diameter of 10 mm; SO₂: sulfur dioxide; predictors: SO₂, relative humidity, and hours of sunshine; dependent variable: asthma prevalence; = squared multiple correlation of with . = 0.303, = 5.573, and .