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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: J Neurosurg. 2018 Jun 1;130(4):1193–1202. doi: 10.3171/2017.12.JNS172331

FIG. 2.

FIG. 2.

Postoperative seizure outcome rates across all studies by publication date. Z-statistics and p values for Fisher transformation tests are provided. A: Percent of patients with complete seizure freedom per study over time (Z = 1.384; p = 0.166). B: Percent of patients with drop attack freedom per study over time (Z = 0.051; p = 0.959).