The Census Bureau, the authoritative source of health insurance data for more than three decades, is changing its annual survey so thoroughly that it will be difficult to measure the effects of President Obama's health care law in the next report, due this fall, census officials said. The changes are intended to improve the accuracy of the survey, being conducted this month in interviews with tens of thousands of households around the country. But the new questions are so different that the findings will not be comparable, the officials said.
...What's being missed here is that the Obama administration will use the new survey questions to collect data for 2013, the year prior to Obamacare's health insurance expansion, a senior administration official says. The Census Bureau reports the health insurance rate with a one-year delay; in September 2013, for example, the agency reported the percent of Americans without coverage in 2012. It will most likely report the uninsured rate for 2013 sometime this coming fall. In other words: The survey will make it difficult to compare the uninsured rate for 2012, the last year for the old questions, and 2013, the first year for the new questions. But making the change now means that 2013 and 2014 -- the year before and after Obamacare's big programs started – are using the same question set.