Blog

Writing on R in
regulated settings.

Practical guides, methodology notes, and regulatory context for pharma statisticians. Written by Ndoh Penn.

Latest post
1 Jul 2026 10 min read

Qualifying regulog in a validated R environment

How to run the pre-written IQ/OQ/PQ protocols, capture the qualification record, and log the qualification process itself — for 21 CFR Part 11 and EU Annex 11 regulated environments.

Validation 21 CFR Part 11 EU Annex 11
1 Jul 202610 min read

Qualifying regulog in a validated R environment

How to run the pre-written IQ/OQ/PQ protocols, capture the qualification record, and log the qualification process itself — for 21 CFR Part 11 and EU Annex 11 environments.

26 Jun 202612 min read

21 CFR Part 11-compliant immunogenicity analysis in R with regulog

End-to-end audit logging for a Phase III RSV vaccine trial — GMT computation, seroconversion rates, outlier review, electronic sign-off, and hash chain verification.

26 Jun 20269 min read

Traceable ADaM derivation: every exclusion documented with lineager

Building ADEFF from ADSL and ADLB with row-level provenance — population flags, change from baseline, EASI-75 responder flag, CONSORT table, and subject-level tracing.

26 Jun 20268 min read

Row-level provenance in real-world evidence studies with lineager

New-user active comparator cohort derivation from administrative claims — every exclusion criterion documented, every patient traceable, CONSORT table automatic.

26 Jun 202610 min read

Audit-ready oncology safety monitoring in R with regulog

TEAE summaries, SAE flagging, safety signal documentation, dual electronic sign-off, and submission-ready audit trail for a Phase III NSCLC trial.

22 Jun 20268 min read

Bayesian prior elicitation for clinical trials: a practical guide with bayprior

How to elicit, document, and justify informative priors for regulatory submissions — aligned with FDA 2026 draft guidance.

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