What I mean is everyone has different chemistry and cancer spreads in different parts of the body. One person with lung cancer may have it in the brain or just localized. Another lung cancer patient may have it in the liver. One form of lung cancer may be more aggressive than another.
When you take this into consideration, how can you apply general statistics to your own case? You can't. I have read amazing stories about cancer patients who have survived and are doing well today. The statistics for their particular type of cancer were not good. If they had taken them as "an absolute" and did not have a positive attitude and the fortitude to fight, they probably would not be in the survival statistics!
The point I am trying to make is a little information is fine, but too much dwelling on statistical data will not serve you well!