Hi all,
I want to estimate the sample size for a
non-inferiority test of paired proportions. There is an excellent discussion on
this in PASS documentation: http://ncss.wpengine.netdna-cdn.com/wp-content/themes/ncss/pdf/Procedures/PASS/Non-Inferiority_Tests...
I know that in SAS there is PAIREDFREQ in PROC POWER, but it seems that there is no straight forward solution for this non-inferiority problem.
Can anyone shed lights on how to solve it in SAS?
Thanks in advance!
Hu
No clear about your meaning. You mean in PROC POWER you can't reach this aim ?
You can definitely do noninferiority power calculations. Here is a good description for some of this. Check the User's Guide for other applications.
the link 'design and analysis of noninferiority studies' included only an example of non-inferiority test of two independent proportions. However, the original question is about the non-inferiority test of two paired proportions or two correlated proportions. For two correlated proportions, the proc power has a statement of pairedfreq. Not sure if proc power with pairedfreq statement can be used to calculate the sample size for non-inferiority test for two correlated proportions.
I I think this is covered in Catello and Watts (2015). See Table 4 on p. 7.
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