Table 3.

Impact of mean 14-day concentration of PM_2.5 (increasing unit: 10 µg/m³) on asthma quality of life and the risk of poor asthma quality of life, adjusted to potential confounders.

PM2.5 Concentration	Asthma Quality of Life on Original Scale			Categorized Asthma Quality of Life (Ordered from Good as “1” to Poor as ”3”)
	B *	95% CI for B	p a	OR	95% CI for OR	p b
AQLQ total
14-day concentrations of PM2.5	−0.16	−0.24; −0.07	<0.001	1.46	1.29; 1.66	<0.001
AQLQ symptoms
14-day concentrations of PM2.5	−0.18	−0.27; −0.09	<0.001	1.37	1.20; 1.55	<0.001
AQLQ activity limitation
14-day concentrations of PM2.5	−0.14	−0.23; −0.06	<0.001	1.46	1.29; 1.66	<0.001
AQLQ emotional function
14-day concentrations of PM2.5	−0.15	−0.26; −0.05	0.004	1.21	0.91; 1.20	0.002
AQLQ environmental stimuli
14-day concentrations of PM2.5	−0.14	−0.24; −0.05	0.003	1.40	1.24; 1.58	<0.001

* B—standardized coefficient (beta); (a) adjusted to age, gender, active smoking, university education, and season of measurement; (b) adjusted to age, age², gender, and university education.