Effect of household air pollution due to solid fuel combustion on childhood respiratory diseases in a semi urban population in Sri Lanka

Table 6 Correlation coefficients between air quality measurements and respiratory illnesses

Respiratory illness (disease episodes per year)	Air Pollutant (mean level of measured air pollutant during cooking)
	CO (n = 105)		CO₂ (n = 111)		PM_2.5 (n = 113)
	Pearson Correlation Coefficient	p-value	Pearson Correlation	p-value	Pearson Correlation	p-value
RTI	0.092	0.352	0.89	0.355	0.256	0.006
LRTI	0.168	0.092	0.211	0.028	0.327	< 0.001
Asthma	−0.026	0.799	0.002	0.980	−0.077	0.429
Infection induced Asthma	0.107	0.278	0.113	0.236	0.327	< 0.001

RTI Respiratory tract infection, LRTI Lower respiratory tract infection, CO Carbon monoxide, CO₂ Carbon dioxide, PM_2.5 Particulate matter 2.5 μm

ISSN: 1471-2431