Focus Areas

CPS Resources

Comprehensive documentation on the CPS-ASEC is available at the Census Bureau's health insurance web page.

SHADAC has a variety of resources and links, below, that focus on state-level estimation of health insurance coverage.

CPS Estimates of Health Insurance Coverage

  • SHADAC's Data Center, to generate health insurance coverage tables and charts from calendar year 1987 to present.

SHADAC's Enhanced CPS Estimates

SHADAC has developed and made available a Current Population Survey (CPS) data series (the "SHADAC-Enhanced CPS") that makes several adjustments to the CPS estimates to account for survey changes over time.  These resources describe the adjustments and explain how to use the adjusted microdata. 

CPS Sample Design

The CPS is a complex survey

  • CPS sample size by state, 1988 to present (individuals and households).  This file includes observations for the 2001 sample expansion.

Historical changes to the CPS methodology

The CPS has collected health insurance coverage data since 1988.  In that time a number of methodological changes have been applied the the survey that affect how estimates trend over time.  SHADAC has compiled a timeline and description of these changes and how to adjust for them.  Furthermore, SHADAC has developed Stata programmed code to conduct these adjustments.


SHADAC's Annual Data Release Conference Call Summaries

Each year upon release of the annual CPS data (late August or early September), SHADAC hosts a conference call featuring experts from the U.S. Census Bureau.  The calls are open to the public and the purpose is to discuss any issues or concerns.  A summary of each year's call is below.  To get information on future calls please sign up for our mailing list (lower right corner of our home page) or check our news page in mid- to late August.


County-level health insurance estimates (SAHIE)

Many analysts seek sub-state (county, metro area) health insurance estimates.  The Census Bureau has developed modeled estimates, formerly using the CPS and based on multiple years of data, and most recently using the American Community Survey single years of data.  SHADAC's October 2011 issue brief on new SAHIE estimates explains the methodology.

Medicaid "undercount"

The Medicaid "undercount" is the phenomena resulting from a disparity between administrative reports and survey respondent self-reporting of Medicaid enrollment.  Typically surveys under-report the number of enrollees, for a variety of reasons.  These resources explain the findings from SHADAC's research and provide a correction tool.

SHADAC Issue Briefs Featuring the CPS

SHADAC Journal Articles Featuring the CPS

SHADAC Presentations Featuring the CPS