3. Statistics analysis
Categorical variables were described using frequencies and percentages,
and continuous variables were described using median, minimum and
maximum. Shapiro-Wilk test is used to test whether the data conform to a
normal distribution. The degree of SARS-CoV-2-induced hemolysis compared
with the literature was examined by Mann-Whitney U test. Paired samples
conformed to a normal distribution use paired sample T test, otherwise
Wilcoxon test is used for examination. All of the analyses were
performed using the statistical package SPSS 26.0, p<0.05 was
considered statistically significant.