Showing 1 - 10 of 95
In this paper we perform inference on the effect of a treatment on survival times in studies where the treatment assignment is not randomized and the assignment time is not known in advance. Two such studies are discussed: a heart transplant program and a study of Swedish unemployed eligible for...
Persistent link: https://www.econbiz.de/10003801073
We propose a complete framework for model-free difference-in-differences analysis with covariates, where model-free means data-driven, in particular nonparametric estimation and testing, variable and scale choice. We start with searching for the preferred data setup by simultaneously choosing...
Persistent link: https://www.econbiz.de/10013471352
We examine the (potentially nonlinear) relationship between inequality and growth using a method which does not require … used (nonlinear) parametric approaches - the economy first expands rapidly with a large decline in inequality, plateaus … when inequality remains relatively stable, and then decreases rapidly with a large increase in inequality. This novel …
Persistent link: https://www.econbiz.de/10010469680
Survey under-coverage of top incomes leads to bias in survey-based estimates of overall income inequality. Using income … how it affects estimates of overall income inequality. More generally, we assess whether the SPI adjustment is fit for …
Persistent link: https://www.econbiz.de/10011703644
This note argues that nonparametric regression not only relaxes functional form assumptions vis-a-vis parametric regression, but that it also permits endogenous control variables. To control for selection bias or to make an exclusion restriction in instrumental variables regression valid,...
Persistent link: https://www.econbiz.de/10003323164
A large part of the recent literature on program evaluation has focused on estimation of the average effect of the treatment under assumptions of unconfoundedness or ignorability following the seminal work by Rubin (1974) and Rosenbaum and Rubin (1983). In many cases however, researchers are...
Persistent link: https://www.econbiz.de/10003310963
We investigate the problem of optimal choice of the smoothing parameter (bandwidth) for the regression discontinuity estimator. We focus on estimation by local linear regression, which was shown to be rate optimal (Porter, 2003). Investigation of an expected-squared-error-loss criterion reveals...
Persistent link: https://www.econbiz.de/10003809023
Currently available asymptotic results in the literature suggest that matching estimators have higher variance than reweighting estimators. The extant literature comparing the finite sample properties of matching to specific reweighting estimators, however, has concluded that reweighting...
Persistent link: https://www.econbiz.de/10003809052
Matching estimators are widely used in statistical data analysis. However, the distribution of matching estimators has been derived only for particular cases (Abadie and Imbens, 2006). This article establishes a martingale representation for matching estimators. This representation allows the...
Persistent link: https://www.econbiz.de/10003826104
This paper studies the identification and estimation of preferences and technologies in equilibrium hedonic models. In it, we identify nonparametric structural relationships with nonadditive heterogeneity. We determine what features of hedonic models can be identified from equilibrium...
Persistent link: https://www.econbiz.de/10003879363