Bysort Stata In Sas. I used to use STATA and I wonder if SAS has things like _n. Replace cum cumcum_N That is we first place the data in ascending order of x.
To denote the order and number of observations in a by-sort group eg. Of course you can order your observation based on ordering one variable but you can go further and sort your data on multiple. Stata cmd bysort varlist 1 varlist 2 rc0.
Command-bysort idis a shortcut If the time ordering within the panels is important for the computations then use sort id year by id.
Summarize lengthstay b Con dence Intervals. I used to use STATA and I wonder if SAS has things like _n. Sort id by id. The full syntax of the commands is by varlist 1 varlist 2 sort rc0.
