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Table 1 Fourteen variables retained for the final principal component analysis for the area-level deprivation index, 2011

From: Area-level deprivation and preterm birth: results from a national, commercially-insured population

Sociodemographic domain Variable
Education % males and females with less than a high school education
Employment % males and females unemployed
Housing % housing rented
% housing crowded
% renter or owner costs in excess of 50% of income
Occupation % males in professional occupations
Poverty % households in poverty
% female headed households with dependent children
% households earning under $30,000/year
% households on public assistance
% households with no car
Racial composition % residents who were non-Hispanic blacks
Residential stability % in same residence since 1995
% residents 65 years and above