• Alison A Galbraith, Sabrina T Wong, Sue E Kim, and Paul W Newacheck.
• Department of Ambulatory Care and Prevention, Harvard Pilgrim Health Care and Harvard Medical School, Boston, MA 02215, USA.
• Health Serv Res. 2005 Dec 1;40(6 Pt 1):1722-36.

ObjectiveTo determine whether socioeconomic disparities exist in the financial burden of out-of-pocket (OOP) health care expenditures for families with children, and whether health insurance coverage decreases financial burden for low-income families.Data SourceThe Household Component of the 2001 Medical Expenditure Panel Survey.Study DesignCross-sectional family-level analysis. We used bivariate statistics to examine whether financial burden varied by poverty level. Multivariate regression models were used to assess whether family insurance coverage was associated with level of financial burden for low-income families. The main outcome was financial burden, defined as the proportion of family income spent on OOP health care expenditures, including premiums, for all family members.Data Collection/ExtractionWe aggregated annual OOP expenditures for all members of 4,531 families with a child <18 years old. Family insurance coverage was categorized as follows: (1) all members publicly insured all year, (2) all members privately insured all year, (3) all members uninsured all year, (4) partial coverage, or (5) mix of public and private with no uninsured periods.Principal FindingsA regressive gradient was noted for financial burden across income groups, with families with incomes <100 percent of the Federal Poverty Level (FPL) spending a mean of 119.66 US dollars OOP per 1,000 US dollars of family income and families with incomes 100-199 percent FPL spending 66.30 US dollars OOP per 1,000 US dollars, compared with 37.75 US dollars for families with incomes >400 percent FPL. For low-income families (<200 percent FPL), there was a 785 percent decrease in financial burden for those with full-year public coverage compared with those with full-year private insurance (p < .001).ConclusionsSocioeconomic disparities exist in the financial burden of OOP health care expenditures for families with children. For low-income families, full-year public coverage provides significantly greater protection from financial burden than full-year private coverage.

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