AP BIOLOGY

Detailed explanation-1: -The survival rate is often stated as a five-year survival rate, which is the percentage of people in a study or treatment group who are alive five years after their diagnosis or the start of treatment. Also called overall survival rate.

Detailed explanation-2: -It is calculated by dividing the percentage of patients with the disease who are still alive at the end of the period of time by the percentage of people in the general population of the same sex and age who are alive at the end of the same time period.

Detailed explanation-3: -Cancer statistics often use an overall five-year survival rate. Survival rates are usually given in percentages. For instance, the overall five-year survival rate for bladder cancer is 77 percent. That means that of all people who have bladder cancer, 77 of every 100 are living five years after diagnosis.

Detailed explanation-4: -The doctor describes her chance for survival as 50-50 and stresses that approximately 50% of the affected patients die in spite of round-the-clock treatment; with no treatment, death is virtually certain.

Detailed explanation-5: -The number of cancer survivors is projected to grow to 26.0 million by 2040. Over the next decade, the number of people who have lived 5 or more years after their cancer diagnosis is projected to increase approximately 30%, to 16.3 million.