Extrapolation from Progression-Free Survival to Overall Survival in Oncology
![tion from Progression-Free Survival to Overall Survival in Oncology report cover](https://www.ohe.org/wp-content/uploads/2016/12/PFS-to-OS-v3.jpg)
Health care systems organise the finance and delivery of health care. They vary by country, reflecting specific history, culture, and economics. To maximise coverage and efficiency they must evolve with changing demographics, needs, and technologies.