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. Author manuscript; available in PMC: 2017 Jun 6.
Published in final edited form as: J Clin Neurosci. 2016 Jul 6;31:166–171. doi: 10.1016/j.jocn.2016.03.004

Fig. 4.

Fig. 4

Kaplan-Meier estimate of proportion ETV failure-free (“ETV survival”) by history of shunt prior to ETV. Log-rank analysis shows a significant difference between the curves for the group with a prior shunt and the group without history of prior shunt (p < 0.001).