Retrieving log-likelihood with suest command using vce(cluster clustvar)

[Mihir Sharma]

Dear Statalisters,

I am testing for the equality of logit regression coefficients across different sub-samples using the -suest- command with -test- and -testnl-.

foreach subsamp in samp1 samp2 { 
    logit y x i.var1 & `subsamp'
    est store `subsamp'
}
suest samp1 samp2, cluster(clustervar)
test [samp1_y]x = [samp2_y]x

The help page for the -suest- command mentions: "The estimators should be estimated without vce(robust) or vce(cluster clustvar) options. -suest- returns the robust VCE, allows the vce(cluster clustvar) option". However, I am still having to run the logit command twice- once with cluster(clustervar) so that I can record the log-likelihood statistic to report in my results and once without cluster(clustervar) for the suest command.

Is there any way of getting suest to retrieve the log-likelihood (of the specification using vce (robust) or vce (cluster clustvar)) so that I can avoid running the logit command twice?

Many thanks,
Mihir