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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: JAMA Surg. 2014 Aug;149(8):829–836. doi: 10.1001/jamasurg.2014.857

Figure 1. Changes in discretionary and non-discretionary surgery after insurance expansion in Massachusetts.

Figure 1

Bar graphs represent percent change in the mean rate of discretionary and non-discretionary surgery from before to after Massachusetts healthcare reform (July 2007). Control states are New Jersey and New York. Net change in Massachusetts due insurance expansion was determined using multivariable difference-in-differences analysis and represents change in rate of surgery attributed to insurance expansion.