https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/438208#M109225 Well, I think I've figured out how to get the XPXI data set, but now I'm getting an error message that says, "Within-imputation XPXI missing for _Imputation_= 1 in the input XPXI= data set." Does anyone know what this means / why I am getting this error? Sat, 17 Feb 2018 22:20:21 GMT derekg 2018-02-17T22:20:21Z https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/438050#M109182 <P>I'm working on something involving multiple imputation, and am trying to figure out how I can get an overall p-value associated with a categorical variable in my model.</P><P>&nbsp;</P><P>So first I use PROC MI to generate 10 imputed datasets. Then I'm using PROC SURVEYREG to fit a model for each of the 10 imputed datasets, and then using PROC MIANALYZE to combine the results.</P><P>&nbsp;</P><P>The model I'm fitting in PROC SURVEYREG is roughly of the form Y = A + B + C + X, where Y is a continuous outcome; A, B, and C are covariates being controlled for; and X is a categorical variable with four levels (X1, X2, X3, X4). PROC MIANALYZE will give me results (parameter estimates, p-values, etc.) for three levels of X individually (using the other level as a reference), but what I want is the overall p-value for this variable (i.e., if X1 is the reference level, then the p-value for the test of X2=X3=X4=0).</P><P>&nbsp;</P><P>I think this can be accomplished using a test statement in PROC MIANALYZE, but when I try to do this, I get the warning: "The TEST statement cannot be used when the input PARMS= data set is specified without COVB= or XPXI= data set."</P><P>&nbsp;</P><P>Any suggestions of how to proceed? I've seen that a similar question has already been discussed <A href="https://communities.sas.com/t5/SAS-Procedures/Proc-Mianalyze-obtaining-combined-results-for-categorical/td-p/118162" target="_self">here</A>, but I'm still trying to figure it out.</P><P>&nbsp;</P> Fri, 16 Feb 2018 19:29:40 GMT https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/438050#M109182 derekg 2018-02-16T19:29:40Z https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/438208#M109225 Well, I think I've figured out how to get the XPXI data set, but now I'm getting an error message that says, "Within-imputation XPXI missing for _Imputation_= 1 in the input XPXI= data set." Does anyone know what this means / why I am getting this error? Sat, 17 Feb 2018 22:20:21 GMT https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/438208#M109225 derekg 2018-02-17T22:20:21Z https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/438294#M109259 Looks like I've gotten it to work now by using COVB instead of XPXI Sun, 18 Feb 2018 20:07:56 GMT https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/438294#M109259 derekg 2018-02-18T20:07:56Z https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/563390#M157938 <P>Hi,&nbsp; I am having the same issue as you describe.&nbsp; How did you finally solve the problem?&nbsp; thanks!</P> Mon, 03 Jun 2019 21:11:50 GMT https://communities.sas.com/t5/SAS-Programming/PROC-MIANALYZE-How-to-get-overall-p-value-for-categorical/m-p/563390#M157938 jcn 2019-06-03T21:11:50Z