Difference between the Error Rate and Significance Level, Standard Approach
Calculate the difference between the error rate and significance level for the secondary endpoint, standard (original) approach.
secControl(d, alpha, cvec, gammaVec, ExtrmLoc, type = 2)
d |
boundary of secondary endpoint at the final look (a number, d_(K)) |
alpha |
targeted significance level for the secondary endpoint |
cvec |
a vector of calculated primary boundaries |
gammaVec |
square root of information |
ExtrmLoc |
an integer between 1 and K, locate the maximum of type I error of secondary endpoint |
type |
type of sequential procedures. Type 1 OBF d, Type 2 POC d. |
difference between alpha and the calculated error rate.
Jiangtao Gou
Tamhane, A. C., Gou, J., Jennison, C., Mehta, C. R., and Curto, T. (2018). A gatekeeping procedure to test a primary and a secondary endpoint in a group sequential design with multiple interim looks. Biometrics, 74(1), 40-48.
ldSecControl
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