https://communities.sas.com/t5/Statistical-Procedures/Repeated-measurements-and-test-for-covariance-structures/m-p/385162#M20027 <P>Show us the code that you've tried so far. And tell us more about your experimental protocol, especially the order in which the two treatments were assigned to each subject.</P> Thu, 03 Aug 2017 02:20:59 GMT sld 2017-08-03T02:20:59Z https://communities.sas.com/t5/Statistical-Procedures/Repeated-measurements-and-test-for-covariance-structures/m-p/384680#M20006 <P>I am trying to analyze my data and decide which covariance structure gives me the best AICC values. I have 9 subjects each exposed to 2 treatments, response measurements are made at 1 month, 9 month, 12 month and 15 months. I am trying to write a code to analyze this set of data using compound symmetry, unstructured and spatial power covariance structures and compare AICC values as well as overall type 3 analysis of variance.</P><P>&nbsp;</P><P>Thank you!</P> Tue, 01 Aug 2017 17:02:52 GMT https://communities.sas.com/t5/Statistical-Procedures/Repeated-measurements-and-test-for-covariance-structures/m-p/384680#M20006 mgergreen 2017-08-01T17:02:52Z https://communities.sas.com/t5/Statistical-Procedures/Repeated-measurements-and-test-for-covariance-structures/m-p/385162#M20027 <P>Show us the code that you've tried so far. And tell us more about your experimental protocol, especially the order in which the two treatments were assigned to each subject.</P> Thu, 03 Aug 2017 02:20:59 GMT https://communities.sas.com/t5/Statistical-Procedures/Repeated-measurements-and-test-for-covariance-structures/m-p/385162#M20027 sld 2017-08-03T02:20:59Z