February, 2003
© 2000, 2001, 2003 Scott S. Emerson, M.D., Ph.D.
Session 1- Fixed Sample Design: 57
Decision Theoretic Approach: Hypotheses
Statistical Hypotheses defined for summary measure of probability model
Null Hypothesis: Usually still the status quo
Alternative Hypothesis: Usually still what we hope is true
·Stated in terms of the minimal difference that it is important to detect
-(May account for attenuation due to dropout, delayed effect, etc.)
In the decision theoretic framework, we want to be certain that we will reject either the null or the alternative at the end of the study