SEX	SOCIAL CLASS	INDICATOR	Total
BOTH SEXES	Total	Mean	17.73
BOTH SEXES	Total	Standard deviation	4.99
BOTH SEXES	I	Mean	18.00
BOTH SEXES	I	Standard deviation	5.12
BOTH SEXES	II	Mean	19.02
BOTH SEXES	II	Standard deviation	7.84
BOTH SEXES	III	Mean	17.82
BOTH SEXES	III	Standard deviation	4.74
BOTH SEXES	IV	Mean	17.75
BOTH SEXES	IV	Standard deviation	4.58
BOTH SEXES	V	Mean	17.47
BOTH SEXES	V	Standard deviation	4.51
BOTH SEXES	VI	Mean	17.53
BOTH SEXES	VI	Standard deviation	5.12
BOTH SEXES	Not recorded	Mean	17.95
BOTH SEXES	Not recorded	Standard deviation	5.45
Men	Total	Mean	17.45
Men	Total	Standard deviation	4.64
Men	I	Mean	17.95
Men	I	Standard deviation	4.21
Men	II	Mean	18.61
Men	II	Standard deviation	7.11
Men	III	Mean	17.91
Men	III	Standard deviation	4.83
Men	IV	Mean	17.52
Men	IV	Standard deviation	4.61
Men	V	Mean	17.21
Men	V	Standard deviation	4.35
Men	VI	Mean	16.79
Men	VI	Standard deviation	3.83
Men	Not recorded	Mean	16.65
Men	Not recorded	Standard deviation	4.66
Women	Total	Mean	18.13
Women	Total	Standard deviation	5.41
Women	I	Mean	18.05
Women	I	Standard deviation	6.04
Women	II	Mean	19.73
Women	II	Standard deviation	8.92
Women	III	Mean	17.72
Women	III	Standard deviation	4.64
Women	IV	Mean	18.15
Women	IV	Standard deviation	4.50
Women	V	Mean	17.89
Women	V	Standard deviation	4.71
Women	VI	Mean	18.61
Women	VI	Standard deviation	6.40
Women	Not recorded	Mean	18.86
Women	Not recorded	Standard deviation	5.77