https://communities.sas.com/t5/SAS-Procedures/sample-size-estimation/m-p/598418#M76274 <P>You may also want to expand on your random-to-me TLA.&nbsp; (Three Letter Acronym). What you call an RCT may be industry or organization&nbsp;specific jargon and meaningless to most at best and meaning something else quite different to others at worst.</P> Tue, 22 Oct 2019 14:59:52 GMT ballardw 2019-10-22T14:59:52Z https://communities.sas.com/t5/SAS-Procedures/sample-size-estimation/m-p/598295#M76271 <P>Why the coxreg does not work in my SAS 9.4 when I estimate the sample size and power for a RCT? Who can give me some suggestions to solve this question? Thank you in advance.&nbsp;</P> Tue, 22 Oct 2019 01:01:59 GMT https://communities.sas.com/t5/SAS-Procedures/sample-size-estimation/m-p/598295#M76271 Wmqy2013 2019-10-22T01:01:59Z https://communities.sas.com/t5/SAS-Procedures/sample-size-estimation/m-p/598371#M76273 <P>Please provide your source program. You also need to explain what "does not work mean"? Is there an error in the log? If so, supply the log. Are the results not what you expected? If so, provide the results and data and explain why you were expecting something different.</P> Tue, 22 Oct 2019 11:34:05 GMT https://communities.sas.com/t5/SAS-Procedures/sample-size-estimation/m-p/598371#M76273 Rick_SAS 2019-10-22T11:34:05Z https://communities.sas.com/t5/SAS-Procedures/sample-size-estimation/m-p/598418#M76274 <P>You may also want to expand on your random-to-me TLA.&nbsp; (Three Letter Acronym). What you call an RCT may be industry or organization&nbsp;specific jargon and meaningless to most at best and meaning something else quite different to others at worst.</P> Tue, 22 Oct 2019 14:59:52 GMT https://communities.sas.com/t5/SAS-Procedures/sample-size-estimation/m-p/598418#M76274 ballardw 2019-10-22T14:59:52Z