Analysis from The Commonwealth Fund finds that in 2011, 25 percent of adults ages 19 to 64 experienced a gap in their health insurance with a majority remaining uninsured for one year or more.

Losing or changing jobs was the primary reason people experienced a gap. Almost half of respondents (41 percent) say they had employer-based coverage before they lost their insurance. Eighteen percent had been enrolled in Medicaid; 6 percent had a plan purchased in the individual market; 7 percent had been insured through another source; and 27 percent never had health insurance. [click image for larger view]

Among those who had employer-sponsored insurance prior to their gap in coverage, two-thirds (67 percent) cited a loss or change of a job as the primary reason; nearly six of 10 (58 percent) were uninsured for a year or more.