Marital Status is Associated With Health Insurance Coverage for Working-age Women at all Income Levels, 2007
"Data from the National Health Interview Survey

* Overall, unmarried (divorced or never married) women aged 25-64 years are more likely to be uninsured (21%) than married women (13%) in the same age group..
* Poor married women are more likely to be uninsured than poor unmarried women, in part because they are less likely to have Medicaid coverage.
* Married women are more likely to have private insurance, and less likely to have Medicaid, than unmarried women.
* The probability of an offer of health insurance through an employer increases with family income for both married and unmarried women."