Thanks again to Kit Baum, two new packages dealing with intraclass correlations are available from SSC.
-sampicc- computes the sample size or, alternatively, the power required to test an ICC (p1) against a null value (p0). In addition, the program will compute the sample size for a specified width of a confidence interval for the ICC.
-iccconf- is an immediate command that computes a confidence interval for a single intraclass correlation (ICC). The procedure is based on an approach using the F-test described by Rosner.
To install type:
.ssc install sampicc
.ssc install iccconf
Regards,
Paul
_____________________
Paul F. Visintainer, PhD
[email protected]
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