Sex	Social class	Indicator	Total
Both sexes	TOTAL	Average	17.72
Both sexes	TOTAL	Standard deviation	4.80
Both sexes	I	Average	18.85
Both sexes	I	Standard deviation	5.59
Both sexes	II	Average	18.21
Both sexes	II	Standard deviation	3.83
Both sexes	III	Average	17.91
Both sexes	III	Standard deviation	4.47
Both sexes	IV	Average	17.59
Both sexes	IV	Standard deviation	4.62
Both sexes	V	Average	17.56
Both sexes	V	Standard deviation	4.93
Both sexes	VI	Average	17.27
Both sexes	VI	Standard deviation	4.75
Both sexes	No data recorded	Average	17.79
Both sexes	No data recorded	Standard deviation	5.45
Men	TOTAL	Average	17.42
Men	TOTAL	Standard deviation	4.47
Men	I	Average	18.63
Men	I	Standard deviation	5.62
Men	II	Average	18.08
Men	II	Standard deviation	3.45
Men	III	Average	17.65
Men	III	Standard deviation	4.07
Men	IV	Average	17.55
Men	IV	Standard deviation	4.76
Men	V	Average	17.28
Men	V	Standard deviation	4.67
Men	VI	Average	16.58
Men	VI	Standard deviation	3.61
Men	No data recorded	Average	17.58
Men	No data recorded	Standard deviation	3.70
Women	TOTAL	Average	18.13
Women	TOTAL	Standard deviation	5.18
Women	I	Average	19.08
Women	I	Standard deviation	5.54
Women	II	Average	18.34
Women	II	Standard deviation	4.18
Women	III	Average	18.21
Women	III	Standard deviation	4.87
Women	IV	Average	17.65
Women	IV	Standard deviation	4.37
Women	V	Average	17.97
Women	V	Standard deviation	5.26
Women	VI	Average	18.22
Women	VI	Standard deviation	5.84
Women	No data recorded	Average	17.98
Women	No data recorded	Standard deviation	6.65