variable ssr0 not found after being generated in a foreach

[Joffrey Bousquet]

Hello dear stata community.
Im using the replication data file of Moritz Schularick, When credit bites back (2013).
The author use a local projection approach.
The loop is working but the sum of ssr0 after the loop isn't. The error is... variable ssr0 not found. I don't understand why...
there's the code and thanks for the help.

foreach v of local justgdp {
gen ssr0`v'=.
gen ssr1`v'=.
gen nobs`v'=.
forvalues i =1/5 {
forvalues j= 1/1 {

qui reg `v'`i' pk_norm pk_fin srx_norm_prv srx_fin_prv `rhs7' dum1-dum13 ///
if core==1 & (year<1928|year>1946), noconstant //alt
qui reg `v'`i' pk_norm pk_fin `rhs7' dum1-dum13 ///
if e(sample)==1, noconstant // null, same sample

replace ssr0`v'=e(rss) if _n==`i'
reg `v'`i' pk_norm pk_fin srx_norm_prv srx_fin_prv `rhs7' dum1-dum13 ///
if core==1 & (year<1928|year>1946), noconstant
eststo h`i'
replace ssr1`v'=e(rss) if _n==`i'
replace nobs`v'=e(N) if _n==`i'

test pk_fin=pk_norm // amt test
estadd scalar p_diff1 = r(p)
test srx_norm_prv=srx_fin_prv // amt test
estadd scalar p_diffsrx = r(p)
sum pk_norm if e(sample)
estadd scalar Norm = r(sum)
sum pk_fin if e(sample)
estadd scalar Fin = r(sum)

}
}
}

sum ssr0

[Clyde Schechter]

No, the code never creates a variable ssr0. It creates a series of several variables ssr0*, where * ranges over whatever values are stored in local macro justgdp. If you want summary statistics on all of them, then you can just change the final command to -sum ssr0*-. If you want to create a single ssr0 variable that in some sense incorporates all the ssr0* variables, go for it. But there is no variable named ssr0 created in that code.

Added: In the future, when posting code, please surround it with code delimiters so that indentation and other aspects of formatting are preserved, making it more readable.

[Joffrey Bousquet]

Thank a lot for the help M. Schechter.