Table A1.

Demographic characteristics among all adult residents–TQS, 2018.

Demographic Characteristics	Chengdu (N = 1914)		Chongqing (N = 1829)		Wuhan (N = 2251)		Xiamen (N = 2116)		Xi’an (N = 2123)		Overall (N = 10233)
	n	%	n	%	n	%	n	%	n	%	n	%
Sex
Male	876	49.2	837	51.4	1158	50.6	995	52.2	1031	50.9	4897	50.8
Female	1038	50.8	992	48.6	1093	49.4	1121	47.8	1092	49.1	5336	49.3
Age (Years)
15–24	188	20.4	173	18.2	157	12.3	167	26.1	155	26.1	840	20.4
25–44	787	41.2	601	36.0	838	37.6	1069	48.6	829	38.0	4124	39.4
45–64	576	27.7	728	34.9	796	35.7	660	20.0	779	26.4	3539	29.7
65 and above	363	10.6	327	11.0	460	14.4	220	5.3	360	9.5	1730	10.5
Education Level
Primary school completed or below	218	8.8	285	12.1	225	7.9	452	14.5	145	5.0	1325	9.4
Junior high school completed	394	19.5	492	23.8	522	22.8	493	23.6	364	13.9	2265	20.5
Senior high school completed	453	23.6	462	27.8	721	33.2	491	26.1	694	30.6	2821	28.2
College degree or above	838	48.1	579	36.3	763	36.1	676	35.8	903	50.5	3759	42.0
Occupation
Gov. employee, teacher, healthcare provider	219	12.5	207	13.2	201	9.4	205	9.3	248	11.2	1080	11.5
Factory, business, service industry employee	747	43.5	468	28.0	765	38.5	1065	50.3	750	35.9	3795	37.8
Not in the labor force 1	936	44.0	1105	58.9	1262	52.0	842	40.3	1086	52.9	5231	50.7
Current Smoking Status
Yes	414	22.6	399	25.0	521	22.4	490	23.3	515	23.0	2339	23.4
No	1499	77.4	1423	75.0	1730	77.6	1625	76.7	1608	77.0	7885	76.6
Aware of ENDS	968	55.9	736	45.0	968	46.7	976	49.9	1146	58.7	4794	51.3
Ever use of ENDS	90	4.6	69	4.4	81	3.7	73	4.3	127	6.6	440	4.8
Use ENDS in past 30 days	15	0.7	10	0.6	25	1.0	18	0.9	25	1.7	93	0.9

¹ Respondents who were not in the labor force included students, homemakers, retired, and unemployed residents either able or unable to work.