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Statistical analysis

FG Fei Guo
LH Lin Hao
QZ Qing Zhen
MD Min Diao
CZ Chonglin Zhang
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Patient data were entered in the computer to establish a Microsoft Access database. SPSS 13.0 statistical software (SPSS, Inc., Chicago, IL, USA) was used for statistical analysis. The continuous variables with normal distribution in measurement data were presented as mean ± SD, and mean values were compared by one-way analysis of variance (ANOVA). Partial distributors were expressed as medians and quartiles (P25 and P75), and the mean values were compared using the Wilcoxon test. Non-continuous variables or categorical data, which included ratios, were compared with the Chi-square test.

Copyright and License information:  ©2016-10-03 Guo et al.
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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