Survival, Risk, and Study Endpoints
Educational orientation
Source-checked: 2026-06-05. This page explains statistics; it does not estimate personal prognosis.
Core Idea
Cancer statistics describe groups, not individual certainty. Incidence counts new cases. Mortality counts deaths. Relative survival compares people with cancer to similar people in the general population. Trial endpoints such as overall survival, progression-free survival, response rate, and quality of life answer different questions.
Numbers need source, year range, population, cancer type, stage, and method. A statistic from one country or era may not transfer to another.
Essential Vocabulary
- Incidence: new cases over time.
- Mortality: deaths over time.
- Overall survival: time until death from any cause.
- Progression-free survival: time without measured worsening.
What This Does Not Mean
Population statistics should not be read as a personal clock.
Builder/Data Lens
Survival analysis needs censoring, follow-up time, endpoint definition, and cohort entry date.
Go Deeper
References
- National Cancer Institute. Cancer Statistics
- SEER. Cancer Stat Facts