Sampling Generator
Generate reproducible simple, systematic, stratified, or cluster samples.
Open application Academic profile Kelantan · Malaysia
Public health · biostatistics · research methodology
Najib Majdi Yaacob
MD, MPH, DrPH
Associate Professor, Department of Biostatistics and Research Methodology, School of Medical Sciences, Universiti Sains Malaysia
Practical tools and learning resources supporting health and medical research—from study planning to analysis.
Research · Teaching · Practice Evidence made useful.
Research pathways
What do you need to do?
Begin with the research task that most closely matches your current question.
Selected applications
Focused tools for practical research
Clinical Trial Randomisation
Create allocation schedules with unequal allocation, permuted blocks, and optional stratification.
Open applicationDiagnostic Test Accuracy
Analyse a binary 2 × 2 table with confidence intervals and cautious interpretation.
Open applicationAcademic work
Teaching, research, and methodological support
Explore selected research activity or get in touch about teaching, workshops, consultancy, and appropriate academic collaboration.