An estimated 3 million children a year have no health care coverage even though at least one of their parents is insured, according to a study in the Oct. 22/29 Journal of the American Medical Association. “More than a million of these children were without coverage for the entire year,” the researchers said. Low- and middle-income families were more likely to have an uninsured child and insured parent, as were single-parent and Hispanic households and parents with private insurance. “The working adults in these families may be able to afford private insurance for themselves but cannot afford to pay the premiums to cover their entire family,” the study suggests. The findings are based on an analysis of 2002-2005 data from the Agency for Healthcare Research and Quality’s Medical Expenditure Panel Survey.