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. Author manuscript; available in PMC: 2023 Mar 24.
Published in final edited form as: J Neurosurg Spine. 2021 Sep 24;36(2):336–344. doi: 10.3171/2021.3.SPINE2122

Figure 1:

Figure 1:

Changes in procedure volume according to payer type. Individual data points are displayed by quarter-year. The vertical dashed line indicates the time of Medicaid expansion in 2014. A) changes in overall volume, B) changes in Medicaid surgical volume, C) changes in privately insured surgical volume, D) changes in uninsured surgical volume.