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2018 CPS ASEC Split-Panel Test

In 2018, the Census Bureau fielded a Split-Panel test of the Current Population Survey Annual Social and Economic Supplement (CPS ASEC) to fulfill budgetary requirements for the 2087 fiscal year. According to Public Law 113-235 Dec. 16, 2014, the Census Bureau was to "collect data for the Annual Social and Economic Supplement to the Current Population Survey using the same health insurance questions included in previous years, in addition to the revised questions implemented in the Current Population Survey beginning in February 2014."

There were approximately 100,000 addresses in the 2018 CPS ASEC sample; a sub­-sample of about 5,000 addresses were randomly assigned to be eligible to receive the traditional health insurance questions (i.e., pre-2014 CPS ASEC questions). The remaining sample (about 95,000 addresses) were eligible to receive the set of the redesigned health insurance questions.

According to the 2018 CPS ASEC Split-Panel Test, the uninsured rate of 11.0 percent from the traditional health insurance questions was statistically different from the uninsured rate of 8.8 percent from the redesigned questions.

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