Empirical Quantile CI is an Alpha Version

Why is the Empirical Quantile Confidence Interval option labeled as "Alpha"?

Answer:

In version 4.6.0.0, the Empirical Quantile Confidence Interval (CI) calculation was changed and can now use Method 1 or Method 2.   It also now applies to the APC and Tau CI’s as well as the AAPC CI’s.  Due to the method addition and the fact that APC and Tau CI’s are also computed using the Empirical Quantile method, this feature has set as “alpha” for this release.  Being marked as alpha indicates that this feature is still being heavily tested and that it may change in the future.

 
 
See Empirical Quantile for a complete description.