Hello!  I am trying to calculate Gwet's AC1 statistic for multiple raters applying a scoring tool to multiple articles in a review.     I have been able to do a calculation for 2 raters using the example data and code below (2 RATER CODE).  In this example, there were 31 instances where two raters both scored an article a 6, two instances where they both scored an article a 5, two instances where Rater1 scored an article a 6 and Rater2 scored it a 5, and so on...   However, I also have data from testing this tool where there were multiple raters (n = 6 or 😎 scoring 4- 8 articles.  I have not been able to figure out how to code for the multiple raters in SAS.  I have included an example of what this data may look like below under "DATA FOR 6 RATERS".  When I try to use the same code for the agreement statistics for 2 raters (e.g. raterxx*rateryy*raterzz) it does not work.     Any help would be much appreciated!  Thanks!!     DATA/CODE FOR 2 RATERS:   data dataset; input Rater1 Rater2 Count; datalines; 6 6 31 5 5 2 6 5 2 6 4 1 4 5 1 ;   data dataset2; set dataset; wgt = count; run;   proc freq data=dataset2; weight wgt / zeros; test kappa; tables rater1*rater2 / agree(AC1) nocol norow nopercent plots=agreeplot; run;     DATA FOR 6 RATERS:   data dataset; input Rater1 Rater2 Rater3 Rater4 Rater5 Rater6 Count; datalines; 6 6 5 4 5 5 1  5 5 5 5 4 4 1 5 5 5 5 5 5 1 6 4 6 6 5 5 1 ;       ... View more

Hello! I am seeking some assistance with the best formatting for date/time in SAS University Edition and with code to calculate time intervals between 2 date/times.   I have data with initial enrolment dates for people in a study, and then dates for tests.  These are currently in Excel in a variety of date formats, e.g., dd-mm-yyyy and separately 00:00 dd/mm/yyyy and separately 00:00 yyyy-mm-dd 00:00 Sep dd yyyy 00:00:00 yyyy-mm-dd and separately 00:00:00   I want to reformat all of the dates so they are consistent.  On searching SAS help online, it seems as though reformatting to 17MAR00:00:00:00 is appropriate, and I have started to attempt to do this manually.  I am wondering if anyone can confirm that this is the best way to reformat for SAS University Edition?   Also, I would like to then calculate the time in minutes between 2 dates.  From what I have read it appears that the INTCK function is appropriate for this, but it did not seem to work in SAS UE.  I am not sure if it was just the way I wrote the code.     I did the following:   data xxtest2; set xxtest; by SPCODE; days=intck('dtminute', ADM_DT, COL_DT); put minutes=; run;     Many thanks in advance for any assistance with this.   ... View more