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always-good
‎10-15-2023
  • 31 Posts
  • 24 Likes Given
  • 0 Solutions
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Re: model

by Obsidian | Level 7 in SAS Programming
‎10-12-2023 12:51 PM
‎10-12-2023 12:51 PM
Hello,  Sorry for the misunderstanding, I'm asking if both options are correct first to decide whether it is GLM or can be mixed. I mean to present the effect of the month as a repeated measurement.  Thank you  ... View more

Re: model

by Obsidian | Level 7 in SAS Programming
‎10-12-2023 08:33 AM
‎10-12-2023 08:33 AM
the main effect is basically the season, can we say that month is a repeated measurement? in this case is this a mixed linear model? and how to present the month in the result table please? ... View more

Use both season and month in model?

by Obsidian | Level 7 in SAS Programming
‎10-12-2023 08:08 AM
‎10-12-2023 08:08 AM
Dear all, I have an example for which I'm confused to set the best model. I want to see the effect of the season on the milk production of crossbred cows. Seasons are: Summer season= Jun-Jull-Aug Winter season= Dec-Janv-Fev; There are two groups : 40 animals with the same lactation stage and the same characteristics in each season. can we say: Yij=u+Si+ei (GLM);  OR Yijk= u+Si+Mj+(SxM)ij+ek, where m = random effect of the month but I think it is useless because the month is included in the season. Which is the best model or is there other options. Looking forward to an answer ... View more

GLM mixed model

by Obsidian | Level 7 in SAS Programming
‎10-11-2023 05:38 PM
‎10-11-2023 05:38 PM
Hello everyone, Please have a quick question to know: A statistical model with repeated measurement could be mixed  or GLM model?                 Entrer   Jihène                   ... View more

data transformation for normal distribution

by Obsidian | Level 7 in SAS Programming
‎10-09-2023 05:31 PM
‎10-09-2023 05:31 PM
Hello! How to transform data through the log transformation to ensure a normal distribution for the somatic cells count variable, please? is there any test to test the normality of the data before? Finally, is there a procedure or other way to do the log transformation? Thank you! ... View more

Re: statistical models

by Obsidian | Level 7 in Statistical Procedures
‎08-11-2023 08:31 AM
‎08-11-2023 08:31 AM
Thanks a lot for your rsponse! ... View more

statistical models

by Obsidian | Level 7 in Statistical Procedures
‎08-09-2023 12:20 PM
‎08-09-2023 12:20 PM
Hello everyone,  Please I need an urgent answer! I have a table from an experiment in which, we tested the effect of the season ( winter: conducted in November and December) and summer: conducted in July and August) on the milk production of two groups of animals reared in the same conditions. Each group is randomly assigned according to season winter (30 animals) and summer(30 animals). Both groups have the same characteristics of animals(age, weight..), so can only test the effect of season. The results are presented in the table below : My question is which one of the two suggested models is better describing the result; 1/ Mixed model for repeated measurements where y (milk yield)= µ+Cow+Season+samling time+Season*sampling time+error; 2/One-way Anova where y= µ+season+error Please, I'm counting on the SAS community!    winter (Nov-Dec) summer (July-Augst) SEM P Milk yield         Fat         protein         ... View more

Re: statistical models

by Obsidian | Level 7 in New SAS User
‎08-04-2023 12:50 PM
‎08-04-2023 12:50 PM
Please, how to see if this time relationship between the measurements on the same cow differs from summer to winter? and can we present the table this way for the mixed analysis? ... View more

Re: statistical models

by Obsidian | Level 7 in New SAS User
‎08-04-2023 12:15 PM
‎08-04-2023 12:15 PM
Thank you for your answer, the measurements were repeated for each cow, for each season. The data before analysis per animal. Can we consider the cow as a random effect, (two groups) and the sampling time as a fixed effect but the problem there is no result for the effect of the time of sampling? what do you think, please? Looking forward to your answer! ... View more

statistical models

by Obsidian | Level 7 in New SAS User
‎08-04-2023 11:04 AM
‎08-04-2023 11:04 AM
Hello everyone,  Please I need an urgent answer! I have a table from an experiment in which, we tested the effect of the season ( winter: conducted in November and December) and summer: conducted in July and August) on the milk production of two groups of animals reared in the same conditions. Each group is randomly assigned according to season winter (30 animals) and summer(30 animals). Both groups have the same characteristics of animals(age, weight..), so can only test the effect of season. The results are presented in the table below : My question is which one of the two suggested models is better describing the result; 1/ Mixed model for repeated measurements where y (milk yield)= µ+Cow+Season+samling time+Season*sampling time+error; 2/One-way Anova where y= µ+season+error Please, I'm counting on the SAS community!    winter (Nov-Dec) summer (July-Augst) SEM P Milk yield         Fat         protein         ... View more

Re: date text file

by Obsidian | Level 7 in New SAS User
‎02-09-2023 03:03 PM
‎02-09-2023 03:03 PM
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

Re: date text file

by Obsidian | Level 7 in New SAS User
‎02-09-2023 01:50 PM
‎02-09-2023 01:50 PM
Thank you for your answer. After many trials, I obtained this text file like in screenshot 3  I runned the following code : 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 date10. I date10. INS date10. PC date10. CD date10. IF date10. Nins CIFI CCI; run; But it is mentionned an invalid data in the log. How can SAS read the file please? ... View more

Re: date text file

by Obsidian | Level 7 in New SAS User
‎02-09-2023 01:42 PM
‎02-09-2023 01:42 PM
Yes.Thank you! ... View more

Re: date text file

by Obsidian | Level 7 in New SAS User
‎02-09-2023 09:54 AM
‎02-09-2023 09:54 AM
  @PaigeMiller wrote: Because when I convert it, the variables are not arranged in the correct way.   I don't know what this means. Please show us a portion of the data, please show us your SAS code, and please show how your SAS code doesn't produce the desired results I mean the CSV file is like in screenshot 1  and the text file obtained is in the second screenshot 2 date excel file date text file and to infile the text file in SAS I used this code: filename BSMB 'C:\Users\x\Desktop\BSMB\text.txt'; data farm; infile BSMB firstobs=2 dlm=';'; input Period THIP Month THIIM ID breed Parity DIM Milk TOTALMilk FAT FM PROTEIN PM SC SCS DP GP Nins IM LastI CD PC di met est pro CCI ICIf RT HR RR PS informat LastI CD PC di met est pro ddmmyy.; format LastI CD PC di met est pro yymmdd10.; run; ... View more

date text file

by Obsidian | Level 7 in New SAS User
‎02-09-2023 09:21 AM
‎02-09-2023 09:21 AM
Hello everyone, I want to ask how to correctly convert a CSV file containig date formate to a text file. Because when I convert it, the variables are not arranged in the correct way. I will infile then this text file with date formate into SAS. Thank you! ... View more
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