About
About me
- 👤 Name: Thomas Arocena
- 🎓 Status: Engineering student (gap year internship)
- 💻 GitHub: https://github.com/thomas-arocena
- 🆔 ORCID: https://orcid.org/0009-0002-7014-220X
About the project
This website was developed in early 2026 as part of a 2½‑month internship project, carried out during my gap year as a student in engineering school.
The project consists of validating R sample‑size computation functions by comparing grid‑based outputs with those from East and nQuery, providing a neutral comparison of the resulting sample sizes.
Who worked on the project
The project was carried out by me, Thomas Arocena, engineering student, with a focus on:
- 📐 Comparing sample‑size methods
- benchmarking R package functions against East and nQuery
- building a reproducible grid‑based workflow
- providing a neutral comparison of resulting sample sizes
- benchmarking R package functions against East and nQuery
- 🧹 Clean and well‑documented code
- tidy, modular R scripts
- clear function structure and comments
- emphasis on reproducibility and transparent methodology
- tidy, modular R scripts
- 🌐 A reader‑friendly Quarto website
- presenting results in an accessible, structured, and didactic format
- mixing explanations, code, outputs, and references
- making technical content understandable to a broader audience
- presenting results in an accessible, structured, and didactic format
- 🔓 Open‑science principles
- all code, documentation, and materials available on GitHub
- full referencing of methods, packages, and tools
- designed for long‑term reusability and transparency
- all code, documentation, and materials available on GitHub
Supervision
The internship was supervised by:
- Dan Chaltiel
- GitHub: https://github.com/DanChaltiel
- ORCID: https://orcid.org/0000-0003-3488-779X
- Email: Dan.CHALTIEL@gustaveroussy.fr
- Anne Lourdessamy
- GitHub: https://github.com/AnneLO83
- ORCID: https://orcid.org/0009-0006-9051-3302
- Email: Anne.LOURDESSAMY@gustaveroussy.fr
Location
The internship took place within Oncostat, the biostatistics team of
Gustave Roussy and CESP (Inserm UMR 1018), based in Villejuif.
About Oncostat
Oncostat is a biostatistics and methodology team dedicated to oncology research, with a focus on clinical trials, observational studies, survival analysis, and reproducible data workflows.
Our mission is to support and develop transparent, rigorous, and reproducible statistical methods for cancer research, working closely with clinicians, epidemiologists, and translational researchers.
The project brings together members from Gustave Roussy and CESP (UMR 1018, Inserm), combining methodological expertise and clinical insight to tackle modern challenges in cancer research.
Institutions & Links
- 🌐 Oncostat website — https://oncostat.github.io/
- 💻 GitHub organization — https://github.com/oncostat
- 🏥 Gustave Roussy — https://www.gustaveroussy.fr/fr/oncostat
- 🧪 CESP (Inserm UMR 1018) — https://cesp.inserm.fr/fr/equipe/oncostat
- 📄 Publications on HAL — https://inserm.hal.science/ONCOSTAT