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. 2011 May 25;11:390. doi: 10.1186/1471-2458-11-390

Table 1.

Distribution of SEP indicators, demographic characteristics and other covariates used in the analysis

f %
Gender
Male 3949 45.0
Female 4831 55.0
missing 0 0

Net Financial Wealth
Wealth 1st fifth (highest) 1713 19.5
Wealth 2nd fifth 1736 19.8
Wealth 3d fifth 1727 19.7
Wealth 4th fifth 1751 19.9
Wealth 5th fifth (lowest) 1724 19.6
missing 129 1.5

Social Class
Managerial and professional 2415 27.5
Intermediate 1533 17.5
Small employees and own account workers 859 9.8
Lower supervisory and technical workers 968 11.0
Workers in semi-routine occupations 2736 31.2
missing 269 3.1

Net Household Income
Income 1st fifth (highest) 1643 18.7
Income 2nd fifth 1697 19.3
Income 3d fifth 1739 19.8
Income 4th fifth 1785 20.3
Income 5th fifth (lowest) 1916 21.8
missing 0 0

Marital Status
Married 4816 54.9
Others 3963 45.1
missing 1 0.01

Education
Degree/Higher education 2093 23.8
A level 575 6.5
O level/CSE grade 1870 21.3
Foreign/other 764 8.7
No qualifications 3468 39.5
missing 10 0.1

Housing Tenure
Owners 7168 81.6
Others 1595 18.2
missing 17 0.2

Ethnicity
White 8574 97.7
Not white 202 2.3
Missing 4 0

Current situation
Retired 4728 53.8
Not retired 4802 55.5
missing 74 0.7
Cognitive Ability (N = 8687) Mean Std Deviation
Age (N = 8687) -0.042 0.836
66.50 9.63