In the United States, the average life span of cancer patients, that is the life span from being diagnosed with cancer to death is 7 years, while the average life span of cancer patients in Asia is only 4 years. Therefore, the United States has a higher level of medical care in extending the lifespan of cancer patients than Asia.
The average survival time of cancer patients in Asia and Japan is 8 years is true and will weaken the above argument most.