Sex	Social class	Exposure to tobacco smoke	Total
Both sexes	TOTAL	TOTAL	100.00
Both sexes	TOTAL	Never or almost never	84.58
Both sexes	TOTAL	Less than one hour a day	7.31
Both sexes	TOTAL	One to five hours a day	5.84
Both sexes	TOTAL	More than 5 hours a day	2.28
Both sexes	I	TOTAL	100.00
Both sexes	I	Never or almost never	86.75
Both sexes	I	Less than one hour a day	6.55
Both sexes	I	One to five hours a day	4.50
Both sexes	I	More than 5 hours a day	2.20
Both sexes	II	TOTAL	100.00
Both sexes	II	Never or almost never	87.04
Both sexes	II	Less than one hour a day	8.03
Both sexes	II	One to five hours a day	3.68
Both sexes	II	More than 5 hours a day	1.24
Both sexes	III	TOTAL	100.00
Both sexes	III	Never or almost never	86.66
Both sexes	III	Less than one hour a day	6.29
Both sexes	III	One to five hours a day	5.31
Both sexes	III	More than 5 hours a day	1.74
Both sexes	IV	TOTAL	100.00
Both sexes	IV	Never or almost never	85.08
Both sexes	IV	Less than one hour a day	7.29
Both sexes	IV	One to five hours a day	5.42
Both sexes	IV	More than 5 hours a day	2.21
Both sexes	V	TOTAL	100.00
Both sexes	V	Never or almost never	82.86
Both sexes	V	Less than one hour a day	8.03
Both sexes	V	One to five hours a day	6.53
Both sexes	V	More than 5 hours a day	2.58
Both sexes	VI	TOTAL	100.00
Both sexes	VI	Never or almost never	81.52
Both sexes	VI	Less than one hour a day	7.40
Both sexes	VI	One to five hours a day	8.01
Both sexes	VI	More than 5 hours a day	3.08
Both sexes	No data recorded	TOTAL	100.00
Both sexes	No data recorded	Never or almost never	88.20
Both sexes	No data recorded	Less than one hour a day	5.90
Both sexes	No data recorded	One to five hours a day	3.86
Both sexes	No data recorded	More than 5 hours a day	2.04
Men	TOTAL	TOTAL	100.00
Men	TOTAL	Never or almost never	83.83
Men	TOTAL	Less than one hour a day	7.80
Men	TOTAL	One to five hours a day	6.10
Men	TOTAL	More than 5 hours a day	2.27
Men	I	TOTAL	100.00
Men	I	Never or almost never	86.11
Men	I	Less than one hour a day	7.01
Men	I	One to five hours a day	4.77
Men	I	More than 5 hours a day	2.11
Men	II	TOTAL	100.00
Men	II	Never or almost never	87.38
Men	II	Less than one hour a day	8.70
Men	II	One to five hours a day	3.04
Men	II	More than 5 hours a day	0.87
Men	III	TOTAL	100.00
Men	III	Never or almost never	86.02
Men	III	Less than one hour a day	6.84
Men	III	One to five hours a day	5.64
Men	III	More than 5 hours a day	1.50
Men	IV	TOTAL	100.00
Men	IV	Never or almost never	83.46
Men	IV	Less than one hour a day	8.21
Men	IV	One to five hours a day	5.94
Men	IV	More than 5 hours a day	2.39
Men	V	TOTAL	100.00
Men	V	Never or almost never	82.12
Men	V	Less than one hour a day	8.53
Men	V	One to five hours a day	6.65
Men	V	More than 5 hours a day	2.70
Men	VI	TOTAL	100.00
Men	VI	Never or almost never	81.17
Men	VI	Less than one hour a day	7.25
Men	VI	One to five hours a day	8.46
Men	VI	More than 5 hours a day	3.12
Men	No data recorded	TOTAL	100.00
Men	No data recorded	Never or almost never	83.19
Men	No data recorded	Less than one hour a day	4.73
Men	No data recorded	One to five hours a day	8.82
Men	No data recorded	More than 5 hours a day	3.27
Women	TOTAL	TOTAL	100.00
Women	TOTAL	Never or almost never	85.29
Women	TOTAL	Less than one hour a day	6.84
Women	TOTAL	One to five hours a day	5.59
Women	TOTAL	More than 5 hours a day	2.28
Women	I	TOTAL	100.00
Women	I	Never or almost never	87.39
Women	I	Less than one hour a day	6.09
Women	I	One to five hours a day	4.23
Women	I	More than 5 hours a day	2.29
Women	II	TOTAL	100.00
Women	II	Never or almost never	86.72
Women	II	Less than one hour a day	7.41
Women	II	One to five hours a day	4.28
Women	II	More than 5 hours a day	1.59
Women	III	TOTAL	100.00
Women	III	Never or almost never	87.28
Women	III	Less than one hour a day	5.76
Women	III	One to five hours a day	5.00
Women	III	More than 5 hours a day	1.97
Women	IV	TOTAL	100.00
Women	IV	Never or almost never	86.80
Women	IV	Less than one hour a day	6.30
Women	IV	One to five hours a day	4.87
Women	IV	More than 5 hours a day	2.02
Women	V	TOTAL	100.00
Women	V	Never or almost never	83.58
Women	V	Less than one hour a day	7.55
Women	V	One to five hours a day	6.41
Women	V	More than 5 hours a day	2.46
Women	VI	TOTAL	100.00
Women	VI	Never or almost never	81.80
Women	VI	Less than one hour a day	7.53
Women	VI	One to five hours a day	7.63
Women	VI	More than 5 hours a day	3.04
Women	No data recorded	TOTAL	100.00
Women	No data recorded	Never or almost never	90.15
Women	No data recorded	Less than one hour a day	6.36
Women	No data recorded	One to five hours a day	1.93
Women	No data recorded	More than 5 hours a day	1.56