Table 4.

Regression statistics for hospital admissions

	Airborne particulate effect
Outcome	Coefficient	SE	p Value
Asthma	−0.00029	0.00140	0.84 (NS)
Bronchs	0.00433	0.00202	0.03 (*)
COPD	−0.00090	0.00235	0.70 (NS)

*Statistically significant at the predefined 5% confidence level.

The coefficient estimate of 0.00433 suggests an expected increase of 4.3% in bronchitis cases for each increase in PM₁₀ of 10 μg/m³.

Bronchs, bronchitis/bronchiolitis; COPD, chronic obstructive pulmonary disease; PM₁₀, particulate matter with a diameter below 10 µ.