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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: Spine (Phila Pa 1976). 2013 Apr 1;38(7):531–539. doi: 10.1097/BRS.0b013e31827c99f0

Figure 1.

Figure 1

Primary outcomes over time by status of revision surgery with area under curve p-value that compares revision surgery group to no revision surgery group.