" how to interpret the output for a random effect." Just interpret random effect as fixed effect.   "there is no probability of the effect like in the fixed effect," You can get estimated coefficient with SOLUTION= option.   "How can I know if there is a significance? " You could use option COVTEST to check whether the random effect is significant or not.   proc mixed data=sashelp.class covtest; /*option covtest check random effect is significant or not*/ class age; model height=weight/solution ; /*option solution= get estimated coefficient of fixed effect*/ random int/subject=age solution; /*option solution= get estimated coefficient of random effect */ run;   Here random effect AGE got P value 0.2017 , which means AGE is NOT significant .You can use only Fixed effect in model. ... View more

Hey everyone - there is a way to use PROC MIXED to fit multiple response variables. A good example can be found in the documentation for the TYPE= option for the REPEATED statement. Look at TYPE=UN@AR(1), where Height and Weight for children measured over time is given. The code suggested is:   proc mixed; class Var Year Child; model Y = Var Year Var*Year; repeated Var Year / type=un@ar(1) subject=Child; run; A similar situation is included in the PROC GLIMMIX documentation, but is much more difficult to implement. Start with the example: Joint Modeling of Binary and Count Data. Note that this approach requires different distribution types for each of the dependent variables, which is not required for the PROC MIXED method.   SteveDenham   ... View more

Hello everyone, When modeling with proc mixed in SAS studio, what is the difference in the Random effects builder when the variable in the model effects is in the intercept box, subject effect (covariance structures), or group effect? It gives the same out. ... View more

If you know the month, you already know the season.   When one predictor is entirely predictable from another predictor, I believe that the resulting SSCP matrix will not be invertible, as it won't be full rank.     ... View more

Could be both mixed and GLM model. For GLM it is MANOVA ,and it is obsoleted model. Check the documentation of PROC GLM,there is an example about it. Example 53.7: Repeated Measures Analysis of Variance proc glm; class Drug Depleted; model LogHistamine0--LogHistamine5 = Drug Depleted Drug*Depleted / nouni; repeated Time 4 (0 1 3 5) polynomial / summary printe; run; Try MIXED model now. ... View more

For single variable to test the normality try NORMATEST option: proc univariate data=sashelp.heart normaltest; var weight; run; For multiple variables to test normality try @Rick_SAS 's blog: https://blogs.sas.com/content/iml/2012/03/02/testing-data-for-multivariate-normality.html For transforming data to conform normal distribution ,try Box-Cox transformation: https://blogs.sas.com/content/iml/2022/08/22/box-cox-transform.html https://blogs.sas.com/content/iml/2022/08/17/box-cox-regression.html ... View more

Thanks a lot for your rsponse! ... View more

It would be better to post it at Stat Forum: https://communities.sas.com/t5/Statistical-Procedures/bd-p/statistical_procedures since you are asking Stat Model.  Maybe @StatDave would give you a good advice . ... View more

I would like to thank all of you 💐 I successfully ran the code that I would  share here  It was really helpful and I appreciate it. Thanks again! filename BSMB 'C:\Users\X\Desktop\BSMB\calv.txt'; data farm; infile BSMB firstobs=2 dlm='09'x; input ID Breed Parity DIM IM PI I INS PC CD IF Nins CIFI CCI; informat PI I INS PC CD IF ddmmyy.10; format PI I INS PC CD IF yymmdd10.; run; ... View more

Do not use PROC ANOVA for two-way ANOVA unless the cell sizes are all equal.   From the documentation for PROC ANOVA   The ANOVA procedure is designed to handle balanced data (that is, data with equal numbers of observations for every combination of the classification factors) ... View more

Thanks a lot! The code works great. ... View more

  If you want the data step to read strings like '17/06/2020' from the text file then tell that by assigning the DDMMYY informat to the variable.  If you want the date values that generates to print in a way that humans can understand then attach a date type format.  It would recommend not using the DDMMYY or the MMDDYY format because either one will confuse 50% of your audience.  Use DATE or YYMMDD and you will not risk having users confuse January sixth for the first of June. Also you will want to use the DSD option when reading a delimited file. Otherwise empty values might cause SAS to misalign the columns.  And add the TRUNCOVER option in case any of the lines have fewer values that expected.   data farm; infile BSMB firstobs=2 dsd dlm=';' truncover; input Period THIPeriod Month THIIMonth ID breed Parity DIMMilk TOTALMilk FAT FM PROTEIN PM SC SCS Dryingperiod Gestationperiod Nins LastI Calvingdate previouscalving CCinterval ICIf IIIplus trpi Icoit Concprate diestrus metestrus estrus proestrus RT HR RR PS ; informat LastI Calvingdate previouscalving diestrus metestrus estrus proestrus ddmmyy.; format LastI Calvingdate previouscalving diestrus metestrus estrus proestrus yymmdd10.; run;   NOTE: You did not show what your CSV file looks like.  So the actual date strings might be in a style that the DDMMYY informat cannot read.  That is because you posted a screenshot of some type of SPREADSHEET.  A CSV file is a text file.  That is critical because a spreadsheet program, like EXCEL, might have changed how the date values are displayed after it read in the CSV file. To share sample lines of of the text file just open it with any text editor (SAS editor will work) and copy and paste a few of the lines of text into the window you get when you press the Insert Code icon (looks like < / > ) on this forum's edit screen. ... View more

Dear Rick, This is exactly what I'm talking about. This is what I'm asking for! The code is running well. Thanks a lot, and I'm so grateful! Best regards. ... View more