Treatment X is listed to provide a survival rate of 75% It is also determined that no intervention by itself provides a survival rate of 5% What can we conclude?
a. Treatment X net contribution to a patient's survival is still 75%
b. Treatment X net contribution to a patient's survival is 70%
c. Treatment X net contribution to a patient's survival is 80%
d. Treatment X net contribution to a patient's survival is 25%
e. none of the above