The percentage of U.S. residents with no health coverage, or health coverage with a high deductible and no personal health account, continues to rise.

Researchers at the National Center for Health Statistics have published statistics on U.S. residents who have no health coverage, or high-deductible health coverage without health accounts, in an update based on preliminary results from 46,164 National Health Interview Study interviews conducted from January to June.

The percentage of adults ages 18 to 64 who were uninsured at the time of the interview increased to 22.4% in 2010, from 21.1% in 2009, and the percentage who had been uninsured for more than a year increased to 16.7%, from 15.4%.

Researchers defined a high-deductible health plan (HDHP) as a private health plan with an annual deductible of at least for $1,200 for an individual or $2,400 for a family, adjusted annually for inflation. The percentage of privately insured U.S. residents under age 65 who had an HDHP with no health savings account or health reimbursement arrangement increased to 18.1% in 2010, from 15.9% the year before. The percentage of residents with an HDHP combined with a personal health account increased to 7.6%, from 6.6%.

The percentage of U.S. residents with private coverage has been dropping every year since at least 1997, and that decline continued between 2009 and 2010. The percentage with public coverage also dropped.

In another, related report, researchers at the U.S. Centers for Disease Control and Prevention say the percentage of U.S. adults ages 18 and older who say they are current smokers dropped to 19.9%, from 20.6%.