Data was converted to time-to-event dataframes in r-studio before visualisation as Kaplan-Meier survival curves and heterogeneity analysis with likelihood ratio tests using Cox proportional-hazard model.
Cox, D.R. (1972), Regression Models and Life-Tables. Journal of the Royal Statistical Society: Series B (Methodological), 34: 187-202. https://doi.org/10.1111/j.2517-6161.1972.tb00899.x
Data is a .xlsx files which should be written as .csv files in r-studio produced by:
RStudio Team (2020). RStudio: Integrated Development for R. RStudio, PBC, Boston, MA URL http://www.rstudio.com/.