Massachusetts health reform and disparities in joint replacement use: difference in differences study.

This reflects an increasing trend, particularly among younger adults, nationwide as well as in other countries, including Canada, the UK, Germany, and Switzerland. 38 56 57 58 While there is no definitive explanation for this trend, conjectures include expansion of indications for these procedures and advances in implant technology. 37 38 56 Implications Our findings indicate that expanded insurance coverage has considerable potential for amelioration of disparities related to race and income in use of elective surgery at the national level in the US.

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