Survival Analysis
Everything on Aqrab tagged Survival Analysis — grouped into one landing page so readers can go deeper by problem family instead of bouncing around the archive blind.
When Death Changes the Question: Competing Risks, Intercurrent Events, and Truncation by Death
A practical guide to the boundary between competing risks, intercurrent events, and truncation by death for clinical researchers. Covers when death changes risk sets, when it makes later outcomes undefined, and what reviewers should demand instead of vague censoring language.
Restricted Mean Survival Time: When Hazard Ratios Are Not the Clinical Answer
A practical guide to restricted mean survival time for clinical researchers. Covers what RMST estimates, when it beats the hazard ratio, how to choose the time horizon, and how to report results clinicians can actually interpret.
Landmark Analysis: Useful, Honest, and Frequently Overclaimed
A practical guide to landmark analysis for clinical researchers. Covers delayed treatment, immortal time bias, conditional survivor populations, landmark selection, and why a cleaner timeline still changes the causal question.
Informative Censoring: When Dropout Is Part of the Bias
A practical guide to informative censoring for clinical researchers. Covers loss to follow-up, treatment discontinuation, database exit, inverse probability of censoring weights, and why dropout can bias survival and causal estimates when it depends on prognosis.
Competing Risks: When Kaplan-Meier Tells the Wrong Clinical Story
A practical guide to competing risks for clinical researchers. Covers death and discharge as competing events, why Kaplan-Meier can overstate event probability, and how cause-specific hazards and cumulative incidence answer different clinical questions.
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