Sampling Generator
Web appGenerate reproducible samples using simple random, systematic, stratified, or cluster sampling.
Open appPublic health, biostatistics & research methods
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 to support health and medical research from study planning to analysis.
Pinned items
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What do you need to do?
Choose the research task that most closely matches your current question.
Featured applications
Research web apps
Open a focused application and process your inputs locally in the browser where supported.
Create two- to six-group allocation schedules with unequal allocation, permuted blocks, and optional stratification.
Open appAnalyze an aggregate binary 2 × 2 table with confidence intervals, likelihood ratios, and cautious interpretation.
Open appBland–Altman Agreement Analyzer
Web appEstimate bias, limits of agreement, uncertainty intervals, and exploratory agreement diagnostics.
Open appThese tools support education and research planning. Review each tool’s assumptions and limitations; they do not replace study-specific statistical consultation.
Academic work and collaboration
Teaching, research, and methodological support
Explore selected research activity or get in touch about teaching, workshops, consultancy, and appropriate academic collaboration.