Statistics Tutorials and Data Analysis Guides

Fine Gray Model formula, subdistribution hazard ratio interpretation, competing-event coding, verified results, diagnostics, software workflows and downloads.

Life Table Analysis formulas for grouped survival, interval risk, withdrawal adjustment and hazard, with verified results, software workflows and downloads.

Kaplan Meier Survival Curve formula, risk sets, censoring, median survival, Greenwood uncertainty, verified values, software workflows, charts and downloads.

Nelson Aalen Estimator formula, cumulative-hazard increments, censoring and ties, verified values, interpretation, software workflows, charts and downloads.

Log Rank Test formula, observed and expected events, variance, assumptions, verified result, interpretation, Python, R, SPSS, Excel, charts and downloads.

Survival Analysis in Python with event coding, Kaplan–Meier, weighted tests, Cox regression, diagnostics, verified results, charts and downloads.

Survival Analysis guide to time origin, events, censoring, risk sets, curves, tests, regression, competing risks, verified examples and software workflows.

Survival Analysis in SPSS with correct STATUS coding, Kaplan–Meier, life tables, Cox regression, output checks, verified results, charts and downloads.

Parametric Survival Models compared with exponential, Weibull and log-normal likelihoods, verified AIC values, assumptions, diagnostics and software workflows.

Survival Analysis in R using Surv, survfit, survdiff, coxph and competing-risk workflows, with verified results, diagnostics, charts and downloadable outputs.