Statistical analysis
A descriptive analysis was performed. Continuous variables are reported
as mean and standard deviation or median and range according to their
distribution, while categorical variables are presented as counts and
percentages. An Excel spreadsheet and STATA version 13 statistical
software were used. For the analysis of COVID-19-related mortality in
patients diagnosed with leukemia or lymphoma according to the previously
defined waves, proportions were compared using the Chi-squared test.
Infostat statistical software was used.