Table 1

Basic characteristics of study subjects

Characteristics	N		%
Total	5646		100.0
Sex
Male	3479		61.6
Female	2167		38.4
Age (years)
15–19	7		0.1
20–29	653		11.6
30–39	1364		24.2
40–49	1519		26.9
50–59	1305		23.1
60–72	798		14.1
Education
High school or below	1305		23.1
College	1234		21.9
University	3107		55.0
Housing ownership
No	1931		34.2
Yes	3715		65.8
Marrital status
Married	3295		58.4
Never married	1960		34.7
Widowed/Divorced	391		6.9
Current alcohol drinkers
No	2130		37.7
Yes	3516		62.3
Self-rated health status
Good	3111		55.1
Normal	1754		31.1
Poor	781		13.8
Smoking rules in work place
I: smoking prohibited indoors	3126		55.4		(% in policy I)
I-1: HTPs/e-cig: prohibited indoors		2645		46.8	84.6
I-2: HTPs/e-cig: allowed indoors		60		1.1	1.9
I-3: HTPs/e-cig: no rules indoors		421		7.5	13.5
II: smoking room/corner available	2218		39.3		(% in policy II)
II-1: HTPs/e-cig: prohibited indoors		1112		19.7	50.1
II-2: HTPs/e-cig: allowed indoors		95		1.7	4.3
II-3: HTPs/e-cig: no rules indoors		1011		17.9	45.6
III: smoking allowed indoors	302		5.3
Tobacco smoking status
Combustible cigarettes smoking status
Never smoker	2861		50.7
Former smoker	1551		27.5
Current smoker	1234		21.9
Current use of HTPs and/or e-cig*	597		10.6
Dual use (HTPs and/or e-cig and combustible cigarettes)	399		7.1
Current use of HTPs*	543		9.6
Dual use (HTPs and combustible cigarettes)	359		6.4
Current use of e-cig*	135		2.4
Dual use (e-cig and combustible cigarettes)	106		1.9