Michael Mwaura
Read our latest research guides, statistical tutorials, and academic writing tips.
Choosing Between R and SPSS for Health & Epidemiological Studies
An in-depth comparative analysis of R Studio and IBM SPSS for medical research, detailing when to use tidyverse data pipelines vs GUI-based parametric modeling.
How to Calculate Sample Size for Survey Research: Cochran vs Yamane Formulas
Learn step-by-step sample size determinations for cross-sectional studies, including margin of error adjustments, non-response buffers, and power calculations in G*Power.
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Building Dynamic Power BI Dashboards for Public Health & M&E Projects
Transforming complex tabular survey logs into interactive executive visualizers using DAX measures, Star schema relational modeling, and automated data refresh.
Understanding Multivariable Logistic Regression in Health Data Analysis
How to adjust for confounding variables, interpret Adjusted Odds Ratios (aOR) with 95% Confidence Intervals, and evaluate Hosmer-Lemeshow goodness-of-fit tests in R.