Dan Chaltiel
Biostatisticien (Praticien Spécialiste)
France
Summary
👤
Senior🎓
Top SchoolDan Chaltiel is a biostatistician and pharmacologist with 10 years’ experience leading clinical research and statistical methodology at Gustave Roussy, where he supports multicenter phase I–III trials, designs protocols and CRFs, and teaches at the graduate level. Trained as a PharmD with doctoral work in epidemiology and nutrition, he blends deep clinical domain knowledge with strong R programming expertise, maintaining and developing widely used R packages such as crosstable, EDCimport and contributions to kableExtra. Comfortable across languages and platforms (R, Python, Kotlin/Java, PHP, JS, Arduino), he focuses on robust reproducible analytics and pragmatic tools that streamline trial data workflows. He is a trusted statistical correspondent for specialty committees (Sarcoma, Pediatrics) and has hands-on experience in hospital pharmacy, data validation and software prototyping. Notably, his open-source work includes fixing tricky edge cases in table manipulation (rowspans, indexing) that improved HTML output reliability for the kableExtra ecosystem. He combines academic rigor with practical engineering to make complex biostatistics accessible and operational in clinical environments.
10 years of coding experience
Doctorat, Épidémiologie, Doctorat, Épidémiologie at Université Paris 13Université Paris CitéMaster 2 (M2), Nutrition, Métabolisme et Signalisation cellulaire, Master 2 (M2), Nutrition, Métabolisme et Signalisation cellulaire at Université Paris Descartes
French, English, Spanish, Japanese
Stackoverflow
8,142reputation
974kreached
186answers
170questions
r
top-5%
dplyr
top-5%
statistics
top-5%
Github Skills (14)
html10
r10
dplyr9
knitr9
statistics9
rmarkdown8
correlation6
math6
ggplot6
plot6
tidyverse6
android6
dataframe6
rstudio6
Programming languages (15)
Github contributions (5)
haozhu233/kableExtra
Aug 2020 - Aug 2020
Construct Complex Table with knitr::kable() + pipe.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits, 2 PRs, 1 comment in 2 days
Contributions summary:Dan primarily focused on implementing and refining the `remove_column` function within the `kableextra` package. They developed the initial function and subsequently addressed multiple bug fixes related to column removal in HTML tables. The user's contributions included handling edge cases with rowspans and addressing off-by-one errors in the column indexing logic. These changes aimed to improve the robustness and functionality of the table manipulation features of the package.
pipelatexknitrrmarkdownkable
DanChaltiel/crosstable
Jul 2019 - Dec 2022
Easy and thorough description of datasets
Contributions:15 releases, 823 commits, 8 PRs in 3 years 5 months
frequency-tablestatisticsbookdowndatasetrstats
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