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st: quantile regression and endogenous variables
using individual data (cross section) I want to run a quantile regression (qreg, sqreg.) on the 0.1, 0.25, etc. percentile of the conditional distribution. Unfortunately, I suspect that one or two determinants (X) are endogenous.
Does anybody of the specialists here know a way to handle this problem ( theoretically and particularly using sqreg / Stata commands)?
Furthermore, if I estimated OLS I would use the cluster-option as the variables are measured at different levels ( individual, school, region).
Is there an analogon to clustering for quantile regressions or, using this qreg-method, did I not have to 'take into account' different levels ?
Any comments are very welcome.
Dipl.Vw. Justina A.V. Fischer,
SIAW - University of St. Gallen
CH-9000 St. Gallen
Fax: ++41-71-224 2298