Table 2.

Percent distribution of passive smoking status among adult never-smokers in both genders

	Male (n=3877)*		Female (n=9101)*
	n	Per cent	n	Per cent
No passive smoking†	1458	37.6	3577	39.3
Passive smoking (times/week)	2419	62.4	5524	60.7
1–3	1030	26.6	1870	20.5
4–6	703	18.1	1274	14.0
>6	686	17.7	2380	26.2
Source of passive smoking
Home	642	16.6	3932	43.2
Workplace	1366	35.2	1412	15.5
Restaurant	350	9.0	469	5.1
Entertainment place	569	14.7	781	8.6
Others	140	3.6	192	2.1

*Complex weighted computation was used in the statistical analysis.

†Exposure to secondhand smoke at least once per week for ≥30 min per occasion at home or public places.