Table 4.

Prevalence of second-hand smoke (SHS) exposure among non-smokers by sex, age group and level of education in the last 30 days.

Characteristics	At Workplace				At Home
	N	N of SHS Exposure	Weighted Percentage (%)	Χ2	N	N of SHS Exposure	Weighted Percentage (%)	Χ2
Overall	873	386	41.9		1613	520	34.1
Sex				8.941 b				51.107 a
Men	323	164	47.6		534	109	22.8
Women	550	222	38.1		1079	411	40.8
Age(years)				5.972 b				7.944 c
15–24	104	38	33.5		164	65	43.6
25–44	557	241	41.5		686	210	30.9
45–64	206	104	49.8		539	183	34.7
≥65	7	-	-		224	62	29.7
Level of educations				0.512 c				19.799 a
Primary or less	14	6	-		147	53	37.5
Junior middle school	120	51	38.6		360	140	39.9
Senior middle school	256	118	45.0		479	146	34.5
College or more	378	173	44.6		453	113	22.6

Notes: ^a p<0.001, ^b p<0.05, ^c p>0.05; - No result could show if unweighted figures less than 25.