Statistical analysis

XQ Xiachuan Qin
BW Baofu Wang
BL Boliang Li
CL Changwei Lin
XL Xuebin Liu
XX Xisheng Xie
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All statistical analyses were performed using SPSS software (version 19.0; Chicago, IL, USA). Baseline data are expressed as the mean ± standard deviation (SD). A paired-samples t-test was used to compare variables with a normal distribution between the two groups with respect to serum calcium and serum inorganic phosphorus levels. A p value < 0.05 was considered significant.

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