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Statistical analysis

YF Yosuke Fujimoto
TS Toshinori Sakai
KS Koichi Sairyo
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Measurements in full flexion, extension, rotation, and side bending were compared with the median of ROM in the five conditions: HO, RS, DC, SO, and NB. Measurements were analyzed using the Kruskal-Wallis test (P < 0.05) after the Shapiro-Wilk test (P < 0.05). Then the Steel-Dwass test for multiple comparisons (P < 0.05) was applied. All data are expressed as median (interquartile range). Statistical analysis was performed using SPSS 22.0.0.0 64-bit (IBM Corp., Armonk, NY) except for the Steel-Dwass test, which was done by using R2.8.1 software.

Copyright and License information:  ©2020 by The Japanese Society for Spine Surgery and Related Research
Spine Surgery and Related Research is an Open Access journal distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view the details of this license, please visit (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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