About this blog / Impressum

This blog is about tumor documentation. Tumor documentation is an important means of quality control in tumor therapy. This blog gives examples on how to extract data from a tumor data base, how to correct and congregate the data, and how to implement satisfying statistical analysis.

A RSS feed can be used to be informed when this site shows new posts!

I am with Mastodon.

All data handling is done by means of the statistical language R, and its libraries. The blog is written in R Markdown and the new Quarto. GTDS is the tumor documentation system of

The author is the former head of the department of hematology and oncology of a OnkoZert certified cancer center in Germany.

This is a private web site. There are no commercial interests. Cookies are not used, and data of visitors are not stored or evaluated. The contents may only be used unchanged, and with explicite citation of the origin (this web site https://www.onkostats.de/ ) - and a notice sent to me!

Copyright by Martin Burk 2022 (as not claimed by others).

Contact data are listed at the end of this about page.

All referenced websites (“links”) have been controlled at the time building this site, and no illegal or offending content has been found with those links. If there would be an issue, please contact me immediately. I will respond and resolve the issue as soon as possible.

Loading required package: sessioninfo
─ Session info ───────────────────────────────────────────────────────────────
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 language (EN)
 collate  en_US.UTF-8
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 tz       Europe/Berlin
 date     2024-02-19
 pandoc   3.1.1 @ /Applications/RStudio.app/Contents/Resources/app/quarto/bin/tools/ (via rmarkdown)
─ Packages ───────────────────────────────────────────────────────────────────
 package     * version date (UTC) lib source
 dplyr       * 1.1.4   2023-11-17 [1] CRAN (R 4.3.0)
 forcats     * 1.0.0   2023-01-29 [1] CRAN (R 4.3.0)
 ggplot2     * 3.4.4   2023-10-12 [1] CRAN (R 4.3.0)
 lubridate   * 1.9.3   2023-09-27 [1] CRAN (R 4.3.0)
 purrr       * 1.0.2   2023-08-10 [1] CRAN (R 4.3.0)
 readr       * 2.1.5   2024-01-10 [1] CRAN (R 4.3.0)
 sessioninfo * 1.2.2   2021-12-06 [1] CRAN (R 4.3.0)
 stringr     * 1.5.1   2023-11-14 [1] CRAN (R 4.3.0)
 tibble      * 3.2.1   2023-03-20 [1] CRAN (R 4.3.0)
 tidyr       * 1.3.1   2024-01-24 [1] CRAN (R 4.3.2)
 tidyverse   * 2.0.0   2023-02-22 [1] CRAN (R 4.3.0)
 [1] /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library

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— | This page brought to you by https://onkostats.de . . . . . — Made with R, RStudio, Quarto, Pandoc, Mermaid, Tidyverse and GTDS … Thank you! — The R logo is copyright © R foundation, licence CC-BY-SA 4.0