Census 2000 Information	Factor Loading	PC Score Coefficient
Unemployment rate (% civilian labor force aged ≥16 y unemployed)	0.83	0.36
Median family incomea	0.97	0.41
Poverty (% population with 1999 income below poverty level)	0.97	0.41
% Population aged ≥25 y with <12 y education	0.85	0.37
% Employed civilian population aged ≥16 y in management, professional, and related occupationsa	0.65	0.30
% Occupied housing units without telephone	0.85	0.37
% Population aged ≥5 y that speaks Spanish and speaks English very wella	0.71	0.32
% Occupied housing units with no vehicle available	0.56	0.26

^a Values were reversed before the z score was computed so that a higher score corresponded to a higher socioeconomic position index score.