"On July 24, 2011, New York State began licensing same-sex marriages under the state's Marriage Equality Act ... This study investigated the association between legalizing same-sex marriage in New York and changes in health insurance coverage in men and women.... Compared with men in opposite-sex relationships, same-sex marriage was associated with a 6.3 percentage point increase in [employer-sponsored insurance (ESI)] ... for men in same-sex relationships ... Same-sex marriage was also associated with an 8.9 percentage point increase in ESI ... for women in same-sex relationships vs. women in opposite-sex relationships."