Sex	Social class	Indicator	Total
Both sexes	TOTAL	Average	7.05
Both sexes	TOTAL	Standard deviation	18.90
Both sexes	I	Average	4.96
Both sexes	I	Standard deviation	8.94
Both sexes	II	Average	5.42
Both sexes	II	Standard deviation	8.86
Both sexes	III	Average	8.50
Both sexes	III	Standard deviation	25.71
Both sexes	IV	Average	5.13
Both sexes	IV	Standard deviation	9.52
Both sexes	V	Average	8.29
Both sexes	V	Standard deviation	24.15
Both sexes	VI	Average	6.78
Both sexes	VI	Standard deviation	9.89
Both sexes	No data recorded	Average	5.68
Both sexes	No data recorded	Standard deviation	8.45
Men	TOTAL	Average	7.98
Men	TOTAL	Standard deviation	18.09
Men	I	Average	6.48
Men	I	Standard deviation	11.94
Men	II	Average	6.85
Men	II	Standard deviation	10.48
Men	III	Average	9.03
Men	III	Standard deviation	26.34
Men	IV	Average	5.92
Men	IV	Standard deviation	12.67
Men	V	Average	9.44
Men	V	Standard deviation	20.77
Men	VI	Average	7.33
Men	VI	Standard deviation	8.94
Men	No data recorded	Average	5.15
Men	No data recorded	Standard deviation	3.96
Women	TOTAL	Average	.
Women	TOTAL	Standard deviation	.
Women	I	Average	3.69
Women	I	Standard deviation	4.96
Women	II	Average	4.39
Women	II	Standard deviation	7.32
Women	III	Average	8.10
Women	III	Standard deviation	25.21
Women	IV	Average	4.36
Women	IV	Standard deviation	4.59
Women	V	Average	7.32
Women	V	Standard deviation	26.64
Women	VI	Average	6.32
Women	VI	Standard deviation	10.61
Women	No data recorded	Average	5.79
Women	No data recorded	Standard deviation	9.08