Advanced Statistics
Extreme Observation or Data Error? Influence Diagnostics and Robust Analysis
Do not delete an observation because it changes significance; investigate errors, influence, leverage and robust sensitivity analyses.
6/20/2026
8 min
Blog
Biostatistics Knowledge Center
Educational articles on statistical methods, SPSS usage, and academic research.
Category:All(8 articles)
Advanced Statistics
A Missing-Data Decision Tree: From Mechanisms to Sensitivity Analysis
Assess missingness mechanisms before deleting observations and choose complete-case analysis, multiple imputation and sensitivity analyses appropriately.
6/20/2026
10 min
Advanced Statistics
Overlapping Predictors in Regression: Stability Diagnostics Beyond VIF
Understand why correlated predictors destabilise regression coefficients, how to interpret VIF, and which remedies preserve the scientific question.
6/20/2026
8 min
Advanced Statistics
Time-to-Event Data: From Risk Sets to Cox Models
Learn how to analyse censored time-to-event data using Kaplan–Meier curves, log-rank tests and Cox regression while checking key assumptions.
6/20/2026
10 min
Advanced Statistics
Protecting a Family of Hypotheses: FWER, FDR and Multiplicity Strategies
Testing many hypotheses increases false-positive risk. This guide compares family-wise error and false discovery rate methods with practical examples.
6/20/2026
9 min
Advanced Statistics
Modelling Binary Outcomes: From Odds Ratios to Clinical Probabilities
Learn how to interpret odds ratios, 95% confidence intervals, p-values, calibration, and AUC in logistic regression with clinical examples.
6/19/2026
11 min