Only probabilities available to calculate CE
In conducting a CE analysis to chose whether to implement a vaccine program or not, we have sots but there is no absolute efficacy. The info we have are probabilities,such as 90% that kids would get the vaccine should the program be implemented and the cost for . The rest of the information are also probabilities that a child may or may not get the disease in each year of a 3 year time period. Do I need efficacy and what type of measure should it be in to run the CE analysis with a 3% discount rate?