02-18-2014 04:59 AM
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!
02-10-2015 11:48 AM
You can definitely do noninferiority power calculations. Here is a good description for some of this. Check the User's Guide for other applications.
02-15-2017 09:56 PM
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.
02-16-2017 11:21 AM