https://communities.sas.com/t5/Statistical-Procedures/How-to-calculate-sample-size-using-SAS-proc-power/m-p/536097#M26984 <P>I am currently in the process of determining sample size for my project using effect size.</P><P>&nbsp;</P><P>I am unsure how sample size calculation is done in SAS using PROC POWER. Can some please explain me in simple words/steps how that is done? I am confused although I have gone through the PROC POWER command using SAS support.&nbsp;</P><P>&nbsp;</P><P>Appreciate your feedback! Thank you.</P> Sat, 16 Feb 2019 00:16:03 GMT san 2019-02-16T00:16:03Z https://communities.sas.com/t5/Statistical-Procedures/How-to-calculate-sample-size-using-SAS-proc-power/m-p/536097#M26984 <P>I am currently in the process of determining sample size for my project using effect size.</P><P>&nbsp;</P><P>I am unsure how sample size calculation is done in SAS using PROC POWER. Can some please explain me in simple words/steps how that is done? I am confused although I have gone through the PROC POWER command using SAS support.&nbsp;</P><P>&nbsp;</P><P>Appreciate your feedback! Thank you.</P> Sat, 16 Feb 2019 00:16:03 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-calculate-sample-size-using-SAS-proc-power/m-p/536097#M26984 san 2019-02-16T00:16:03Z https://communities.sas.com/t5/Statistical-Procedures/How-to-calculate-sample-size-using-SAS-proc-power/m-p/536101#M26985 <P>First you need to know what statistical tests you intend to perform and have a basic guess (usually based on a preliminary study) of the size of the effect you are trying to detect. Then you need to read the documentation for that particular test in PROC POWER and follow the example. <A href="https://go.documentation.sas.com/?docsetId=statug&amp;docsetVersion=15.1&amp;docsetTarget=statug_power_overview.htm&amp;locale=en" target="_self">The documentation for PROC POWER</A> starts with an overview, contains two Getting Started examples, and 11 other examples of various tests.</P> Sat, 16 Feb 2019 00:54:39 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-calculate-sample-size-using-SAS-proc-power/m-p/536101#M26985 Rick_SAS 2019-02-16T00:54:39Z https://communities.sas.com/t5/Statistical-Procedures/How-to-calculate-sample-size-using-SAS-proc-power/m-p/536112#M26986 <P>Thank you, Rick_SAS I will look into what you suggested.</P> Sat, 16 Feb 2019 03:15:28 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-calculate-sample-size-using-SAS-proc-power/m-p/536112#M26986 san 2019-02-16T03:15:28Z