https://communities.sas.com/t5/Statistical-Procedures/Testing-for-an-effect-of-a-treatment-on-an-ordinal-score-beyond/m-p/530528#M26771 <P>You can try an ordinal regression.&nbsp;</P> <P>The documentation has a fully worked example:</P> <P>&nbsp;</P> <P><A href="https://documentation.sas.com/?docsetId=statug&amp;docsetTarget=statug_logistic_examples03.htm&amp;docsetVersion=15.1&amp;locale=en" target="_blank">https://documentation.sas.com/?docsetId=statug&amp;docsetTarget=statug_logistic_examples03.htm&amp;docsetVersion=15.1&amp;locale=en</A></P> <P>&nbsp;</P> <P>Under the title there's a link to the full code that you can run on your machine and then follow through. Once you understand the example, you can replicate it on your own data.&nbsp;</P> <P>&nbsp;</P> <BLOCKQUOTE><HR /><a href="https://communities.sas.com/t5/user/viewprofilepage/user-id/118159">@SBuc</a>&nbsp;wrote:<BR /> <P>Dear Brain trust,</P> <P>I want to determine the effect of a treatment on a score of pain in animals. Many published literature has used GLM models using score as a continuous dependent variable accounting then for treatment, block and animal repetition using linear mixed model.</P> <P>however, this approach is per se assuming that the score is a continuous variable (which is not) and also that a score of 8 is 2 times worst than a score of 4 which is not demonstrated (so the interval between 2 unit scale can not be assumed to be the same throughout the scale (0-15 max points).</P> <P>initially we used non parametric tests such as rank comparison but I want to know if a more elegant and powerful analysis can be performed.</P> <P>thanks</P> <HR /></BLOCKQUOTE> <P>&nbsp;</P> Mon, 28 Jan 2019 02:02:47 GMT Reeza 2019-01-28T02:02:47Z https://communities.sas.com/t5/Statistical-Procedures/Testing-for-an-effect-of-a-treatment-on-an-ordinal-score-beyond/m-p/530452#M26765 <P>Dear Brain trust,</P><P>I want to determine the effect of a treatment on a score of pain in animals. Many published literature has used GLM models using score as a continuous dependent variable accounting then for treatment, block and animal repetition using linear mixed model.</P><P>however, this approach is per se assuming that the score is a continuous variable (which is not) and also that a score of 8 is 2 times worst than a score of 4 which is not demonstrated (so the interval between 2 unit scale can not be assumed to be the same throughout the scale (0-15 max points).</P><P>initially we used non parametric tests such as rank comparison but I want to know if a more elegant and powerful analysis can be performed.</P><P>thanks</P> Sun, 27 Jan 2019 12:11:14 GMT https://communities.sas.com/t5/Statistical-Procedures/Testing-for-an-effect-of-a-treatment-on-an-ordinal-score-beyond/m-p/530452#M26765 SBuc 2019-01-27T12:11:14Z https://communities.sas.com/t5/Statistical-Procedures/Testing-for-an-effect-of-a-treatment-on-an-ordinal-score-beyond/m-p/530528#M26771 <P>You can try an ordinal regression.&nbsp;</P> <P>The documentation has a fully worked example:</P> <P>&nbsp;</P> <P><A href="https://documentation.sas.com/?docsetId=statug&amp;docsetTarget=statug_logistic_examples03.htm&amp;docsetVersion=15.1&amp;locale=en" target="_blank">https://documentation.sas.com/?docsetId=statug&amp;docsetTarget=statug_logistic_examples03.htm&amp;docsetVersion=15.1&amp;locale=en</A></P> <P>&nbsp;</P> <P>Under the title there's a link to the full code that you can run on your machine and then follow through. Once you understand the example, you can replicate it on your own data.&nbsp;</P> <P>&nbsp;</P> <BLOCKQUOTE><HR /><a href="https://communities.sas.com/t5/user/viewprofilepage/user-id/118159">@SBuc</a>&nbsp;wrote:<BR /> <P>Dear Brain trust,</P> <P>I want to determine the effect of a treatment on a score of pain in animals. Many published literature has used GLM models using score as a continuous dependent variable accounting then for treatment, block and animal repetition using linear mixed model.</P> <P>however, this approach is per se assuming that the score is a continuous variable (which is not) and also that a score of 8 is 2 times worst than a score of 4 which is not demonstrated (so the interval between 2 unit scale can not be assumed to be the same throughout the scale (0-15 max points).</P> <P>initially we used non parametric tests such as rank comparison but I want to know if a more elegant and powerful analysis can be performed.</P> <P>thanks</P> <HR /></BLOCKQUOTE> <P>&nbsp;</P> Mon, 28 Jan 2019 02:02:47 GMT https://communities.sas.com/t5/Statistical-Procedures/Testing-for-an-effect-of-a-treatment-on-an-ordinal-score-beyond/m-p/530528#M26771 Reeza 2019-01-28T02:02:47Z