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. 2019 Sep 18;3(3):117–129. doi: 10.1016/j.jses.2019.07.002

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© 2019 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

PMC Copyright notice

Mean difference in version error (in degrees) for patient-specific instrumentation (PSI) vs. standard control. The random-effects DerSimonian-Laird model was used for meta-analysis. Assessment of heterogeneity showed the following: Q value = 19.8, df = 7, P < .001, and I² = 64.6.8% (overall, moderate). The test for overall effect showed Z = 1.35 (P > .999). No statistically significant difference in mean version error (in degrees) was found between PSI and standard instrumentation. SD, standard deviation; CI, confidence interval.