Factors		Perception toward air quality level		Knowledge about air pollution and its heath effect		Awareness for government actions		Willingness to change the behaviors		Air purifier needs at home
Factors		β	p value	β	p value	β	p value	β	p value	β	p value
Gender	Intercept	1.69	<0.0001	2.95	<0.0001	2.28	<0.0001	1.03	<0.0001	1.73	<0.0001
Gender	Male	0.02	0.78	−0.03	0.10	0.01	0.78	0.04	0.002	−0.08	0.06
Age	18 - 25	−0.01	0.94	−0.02	0.26	0.02	0.60	−0.01	0.82	−0.09	0.12
	25 - 45	0.05	0.68	0.03	0.72	0.30	<0.0001	−0.01	0.54	0.40	<0.0001
	45 - 60	−0.05	0.75	0.00	0.96	−0.01	0.85	0.02	0.77	0.18	0.05
	>60	−0.62	0.27	0.05	0.68	0.13	0.67	−0.05	0.64	0.36	0.36
Education	Middle school	0.10	0.81	0.06	0.67	−0.51	0.03	−0.04	0.66	−0.33	0.30
	High school	0.04	0.80	−0.03	0.53	−0.17	0.01	0.04	0.19	−0.22	0.02
	Junior college	−0.09	0.29	−0.01	0.76	−0.06	0.21	0.01	0.90	−0.07	0.25
	Master	−0.09	0.38	0.03	0.28	−0.03	0.58	0.03	0.13	−0.02	0.83
	PhD	−0.41	0.14	0.06	0.63	−0.06	0.69	0.13	0.03	−0.23	0.27
Occupation	Farmer	0.03	0.97	−0.24	0.03	−0.25	0.21	−0.04	0.45	−0.43	0.10
	Freelancer	0.14	0.31	−0.04	0.39	−0.11	0.15	0.01	0.96	0.00	0.96
	Public or governmental organization	−0.04	0.71	0.02	0.84	0.07	0.25	0.01	0.67	0.25	0.00
	Student	−0.01	0.93	−0.02	0.96	−0.18	<0.0001	0.01	0.99	−0.32	<0.0001
	Other	−0.02	0.90	−0.06	0.33	−0.09	0.37	−0.01	0.97	0.07	0.59
Living district	Dongxihu	0.35	0.27	0.13	0.17	−0.27	0.12	0.04	0.53	−0.22	0.35
	Hannan	0.11	0.70	−0.01	0.94	−0.11	0.63	0.00	1.00	−0.29	0.38
	Hanyang	0.11	0.70	0.08	0.33	−0.07	0.63	0.00	1.00	−0.28	0.18
	Hongshan	−0.14	0.57	0.07	0.34	−0.09	0.54	0.07	0.20	−0.35	0.06
	Huangpo	0.31	0.43	0.13	0.26	−0.30	0.16	0.00	1.00	−0.50	0.08
	Jiangan	0.06	0.84	0.03	0.69	−0.12	0.44	0.05	0.40	−0.22	0.29
	Jianghan	0.02	0.94	0.03	0.74	−0.17	0.25	0.03	0.61	−0.21	0.29
	Jiangxia	0.17	0.51	0.08	0.31	−0.14	0.24	0.05	0.41	−0.33	0.08
	Qiaokou	−0.18	0.53	0.08	0.37	−76.00	0.64	0.05	0.39	−0.30	0.17
	Qingshan	0.19	0.54	−0.01	0.88	−0.11	0.51	0.03	0.65	−0.21	0.35
	Wuchang	0.05	0.85	0.10	0.18	−0.15	0.29	0.03	0.60	−0.31	0.09
	Xinzhou	0.21	0.52	0.08	0.44	0.10	0.59	0.06	0.44	−0.33	0.18
Living area	Central city area	−0.13	0.03	0.01	0.68	−0.04	0.27	0.01	0.68	0.02	0.71