https://communities.sas.com/t5/New-SAS-User/Power-calculation-for-cross-sectional-study/m-p/701749#M25807 <P><SPAN>PROC POWER;</SPAN></P><DIV>&nbsp;TWOSAMPLEFREQ TEST=PCHI</DIV><DIV>&nbsp;GROUPPROPORTIONS = 0.8 | 0.6</DIV><DIV>&nbsp;POWER = 0.8</DIV><DIV>&nbsp;NTOTAL = .</DIV><DIV>;</DIV><P><SPAN>RUN;</SPAN></P><P><SPAN>Hi, try this code.&nbsp;</SPAN></P> Thu, 26 Nov 2020 03:44:29 GMT ksumbundu 2020-11-26T03:44:29Z https://communities.sas.com/t5/New-SAS-User/Power-calculation-for-cross-sectional-study/m-p/701747#M25806 <P>Hello,</P><P>&nbsp; I wanted to conduct a power calculation for sample justification. The study is a cross-sectional study with a predictor variable that is Dichotomous and an outcome variable that is also Dichotomous. How would I calculate the power for sample size justification using a chi-square test on SAS?&nbsp;</P><P>&nbsp;</P><P>Thank you in advance!</P> Thu, 26 Nov 2020 03:42:50 GMT https://communities.sas.com/t5/New-SAS-User/Power-calculation-for-cross-sectional-study/m-p/701747#M25806 bshiferaw27 2020-11-26T03:42:50Z https://communities.sas.com/t5/New-SAS-User/Power-calculation-for-cross-sectional-study/m-p/701749#M25807 <P><SPAN>PROC POWER;</SPAN></P><DIV>&nbsp;TWOSAMPLEFREQ TEST=PCHI</DIV><DIV>&nbsp;GROUPPROPORTIONS = 0.8 | 0.6</DIV><DIV>&nbsp;POWER = 0.8</DIV><DIV>&nbsp;NTOTAL = .</DIV><DIV>;</DIV><P><SPAN>RUN;</SPAN></P><P><SPAN>Hi, try this code.&nbsp;</SPAN></P> Thu, 26 Nov 2020 03:44:29 GMT https://communities.sas.com/t5/New-SAS-User/Power-calculation-for-cross-sectional-study/m-p/701749#M25807 ksumbundu 2020-11-26T03:44:29Z