臨床試驗設計系統

Determine parameters to obtain target power.

• power

  Power of test (1 minus Type II error probability)

• alpha

  Significance level (Type I error probability)

• mean_x

  mean of treatment A

• mean_y

  mean of treatment B

• sigma_x

  standard deviation of treatment A

• sigma_y

  standard deviation of treatment B

• rho

  the correlation between A and B within each subject

Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Hillsdale,NJ: Lawrence Erlbaum.