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HH Hangbin Hu
YZ Yan Zhang
PZ Piaopiao Zhang
JW Jie Wang
QY Qing Yuan
WS Weixiao Shi
SZ Sheng Zhang
HF Haiting Feng
YC Yunbo Chen
MY Meihong Yu
HC Hongchao Chen
YJ Yan Jiang
QY Qing Yang
TQ Tingting Qu
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χ2 or Fisher exact test was used for categorical variables and t-test or Mann-Whitney U test for continuous variables to compare different groups in our study. Univariate analysis and multivariate analysis were performed to determine the risk factors for 28-day mortality. Variables with a P value of ≤ 0.05 in the univariate analysis were used in the binary logistic regression analysis to identify independent predictors. Kaplan-Meier survival curves (log-rank test) were obtained with the survminer R package. Kaplan-Meier survival curves were obtained in different groups. Analyses were two-tailed and the P-value of < 0.05 was considered significant. SPSS for Windows (IBM®, version 16.0) was used for the analysis.

Copyright and License information:  ©2021 Hu, Zhang, Zhang, Wang, Yuan, Shi, Zhang, Feng, Chen, Yu, Chen, Jiang, Yang and Qu
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