Sobrevida 5 anos aprox
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The 5-year survival calculator estimates cancer patients' survival rates based on disease stage. It uses the formula '100 − (stage × 20)', where stage (I to IV) defines the 5-year survival percentage. For example, stage II cancer results in 60% chance. This is an educational tool to guide patients and doctors about general expectations, but does not replace clinical diagnoses.
The simplified formula considers historical epidemiological data, where each additional stage reduces survival by 20%. While helpful for trend understanding, factors like cancer type, age, genetics, and treatment response can significantly alter actual prognosis. This calculator should be used alongside case-specific information from oncologists.
Use this tool during medical consultations to contextualize stage and treatment discussions. However, remember that oncology has advanced, and new therapies may improve survival rates. Numbers generated here are approximations and do not indicate absolute certainty for individual clinical outcomes.
If results conflict with medical information, prioritize guidance from healthcare teams. This calculator is informational and serves as a starting point for more complex questions.
Frequently asked questions
Is the formula applicable to all cancer types?
No, it's a general approximation. Survival rates vary significantly between cancers like colorectal, breast, or lung.
Does the result guarantee 5-year survival?
No, it's a statistical probability. Many individual factors influence actual outcomes, including treatment response and overall conditions.
How does it work for stage IV?
The calculation gives 20% for stage IV, but patients in this stage may have higher rates with advanced therapies.
Should I use it to replace medical consultations?
No, the calculator is supplementary. Consult an oncologist for personalized evaluation.
Does age affect the calculation?
The formula doesn't consider age or comorbidities, which can significantly impact prognosis.