Blewett, L.A., A. Ward, and T.J. Beebe. "How Much Health Insurance is Enough? Revisiting the Concept of Underinsurance." Medical Care Research and Review 63(6): 663-700.

This brief compares estimates from four national surveys conducted by the federal government used to estimate the size of the uninsured population, identifies the differences between them, and points out two common threads – all the surveys report very large numbers of Americans living without health insurance and all show that these numbers have risen. August 2006.

Kincheloe, J., E.R. Brown, J. Frates, K.T. Call, W. Yen, and J. Watkins. 2006. "Can We Trust Population Surveys to Count Medicaid Enrollees and the Uninsured?" Health Affairs 25(4): 1163-1167.

Blewett, L.A. and M. Davern. "Meeting the Need for State Level Estimates of Health Insurance Coverage: What Has Been Done and How it Can Be Improved." Health Services Research 41(3): 946-75.

This fact sheet provides a summary of final estimates of health insurance coverage gathered from the 2001 and 2004 Minnesota Health Access Surveys. February 2006.