How do you use the age statement in SAS?
Jun 23, 2017 · Re: Creating Age Groups from Age Variable. Posted 06-25-2017 10:25 AM (16278 views) | In reply to jamuriuk. proc format; value age. 0-14='0-14 '. 15-65='15-65'. 65-120='gt 65'; data; input name $ age ; format age age.; cards;
How does the age statement work in Proc datasets?
If one of the related-SAS-files does not exist, the procedure prints a warning message to the SAS log but continues to age the SAS files that it can. If you age a data set that has an index, the index continues to correspond to the data set. You can age only entire generation groups. For example, if data sets A and B have generation groups, then the following statement deletes generation …
When to use the groupformat option in SAS?
Computing ages with YRDIF The SAS Help and Documentation states that the YRDIF function "Returns the difference in years between two dates." Since age is the difference in years between two dates (a birth date and some other date), the YRDIF function has been used to compute ages in this way: age = INT(YRDIF(birth-date, ending-date,'ACTUAL'));
What is the most common use of by-group in SAS?
The age groups are coded 1 to 5 and correspond to: 15-24; 25-34; 35-44; 45-54; 55-64. The fat content categories are coded 1 to 3 and correspond to: extremely low; fairly low; moderately low. I have no idea how to do this. The only way I can think of is to go into the original dataset and sort them out manually.
How to use SAS by group?
The most common use of BY-group processing in the DATA step is to combine two or more SAS data sets using a BY statement with a SET, MERGE, MODIFY, or UPDATE statement. (If you use a SET, MERGE, or UPDATE statement with the BY statement, your observations must be grouped or ordered.) When processing these statements, SAS reads one observation at a time into the program data vector. With BY-group processing, SAS selects the observations from the data sets according to the values of the BY variable or variables. After processing all the observations from one BY group, SAS expects the next observation to be from the next BY group.
What does notsorting in SAS mean?
The NOTSORTED option in the BY statement tells SAS that the data is not in alphabetic or numeric order, but that it is arranged in groups by the values of the BY variable. You cannot use the NOTSORTED option with the MERGE statement, the UPDATE statement, or when the SET statement lists more than one data set. ...