From the abstract:
Millions of US children and adolescents lack health insurance coverage. Efforts to expand their insurance often focus on extending public coverage to uninsured parents. Less is known about the uninsured whose parents already have coverage.
Among all US children, more than 3% were uninsured with at least 1 insured parent. Predictors of such uninsurance included having low and middle income. Having a parent covered by only public insurance was associated with better children’s coverage rates.
Many Uninsured Kids Have Parents With Insurance
Source: Will Dunham, Reuters, October 21, 2008