I am totally new to STATA and am trying to learn by looking at examples.
In the following piece of code a new variable is generated using a substring command which I do not understand.
gen int cci_ami = 0
foreach v of varlist icd_hd icd_nd1 - icd_nd89 {
quietly replace cci_ami = 1 if inlist(substr(`v',1,3),"I21","I22") | inlist(substr(`v',1,4),"I252")
Could someone explain this to me stepwise?
Thank you for your help!
In the following piece of code a new variable is generated using a substring command which I do not understand.
gen int cci_ami = 0
foreach v of varlist icd_hd icd_nd1 - icd_nd89 {
quietly replace cci_ami = 1 if inlist(substr(`v',1,3),"I21","I22") | inlist(substr(`v',1,4),"I252")
Could someone explain this to me stepwise?
Thank you for your help!
