By Stephanie Richards, Kari Williams, and Sarah Flood

"The Annual Social and Economic Supplement (ASEC) of the Current Population Survey is the official source of information about poverty in the United States. Since 1968, the ASEC has been used to create the Official Poverty Measure (OPM) and has included the variables needed to create that measure. The Supplemental Poverty Measure (SPM) and the variables needed to create it were first released by the Census Bureau in 2010, reporting the SPM for 20091. In contrast to the OPM, the SPM provides a more complete picture of the economic wellbeing of American households.

"The value of the SPM is apparent – it is a comprehensive and nuanced measure that accounts for the diversity of living arrangements, variability in cost of living, and a wider array of available financial resources and demands. However, the temporal coverage of SPM is limited; the Census Bureau only has data back to 2010. Over the last ten years, researchers at Columbia University’s Center on Poverty and Social Policy (CPSP) have eliminated this constraint by compiling the data necessary to create SPM and make it available back to 1968, and have shared the data with the research community via the CPSP Historical SPM Data Portal.

"...In this blog post, we briefly describe differences between the components – family, resources, and needs – used to create OPM and (historical) SPM, preview CPSP’s “anchored” poverty variables that facilitate comparisons over time that reference a set cost-of-living standard, and share suggestions for further reading (because we know you are going to want to learn even more about this!)."

Read the complete blog post online