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with endogenous regressors. I carefully distinguish between parametric and semi-parametric methods and analyze the …
Persistent link: https://www.econbiz.de/10002202971
This paper deals with the identification of treatment effects when the outcome variable is ordered. If outcomes are measured ordinally, previously developed methods to investigate the impact of an endogenous binary regressor on average outcomes cannot be applied as the expectation of an ordered...
Persistent link: https://www.econbiz.de/10003892435
This paper explores semi-monotonicity constraints in the distribution of potential outcomes, first, conditional on an instrument, and second, in terms of the response function. The imposed assumptions are strictly weaker than traditional instrumental variables assumptions and can be gainfully...
Persistent link: https://www.econbiz.de/10008695614
The credibility of standard instrumental variables assumptions is often under dispute. This paper imposes weak monotonicity in order to gain information on counterfactual outcomes, but avoids independence or exclusion restrictions. The outcome process is assumed to be sequentially ordered,...
Persistent link: https://www.econbiz.de/10008695625
; semiparametric efficiency …
Persistent link: https://www.econbiz.de/10003459712
In this paper, we investigate the information content of implied probabilities (Back and Brown, 1993) to improve estimation in unconditional moment conditions models. We propose and evaluate two 3-step euclidian empirical likelihood estimators and their bias-correction versions for weakly...
Persistent link: https://www.econbiz.de/10005857757
The Lerner index is widely used to assess firms' market power. However, estimation and interpretation present several challenges, especially for banks, which tend to produce multiple outputs and operate with considerable inefficiency. We estimate Lerner indices for U.S. banks for 2001-18 using...
Persistent link: https://www.econbiz.de/10011998070
This paper explores a semiparametric version of a time-varying regression, where a subset of the regressors have a …
Persistent link: https://www.econbiz.de/10015192982
The German health care reform of 1997 provides a natural experiment for evaluating the price sensitivity of demand for physicians' services. As a part of the reform, co-payments for prescription drugs were increased step up to 200%. However, certain groups of people were exempted from the...
Persistent link: https://www.econbiz.de/10001806923
This paper reports on a re-evaluation of the German health care reform of 1997. A previous evaluation found a limited effect of a 4.4 percent reduction of the number of doctor visits in a sample of pharmacy customers. The re-evaluation based on a representative household survey, the German...
Persistent link: https://www.econbiz.de/10001807289