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Has medical innovation reduced cancer mortality?

Lichtenberg, Frank - National Bureau of Economic Research (NBER) - 2010

I analyze the effects of four types of medical innovation and cancer incidence on U.S. cancer mortality rates during the period 2000-2009, by estimating difference-in-differences models using longitudinal (annual) data on about 60 cancer sites (breast, colon, etc.). The outcome measure used is...

Persistent link: https://www.econbiz.de/10008619309

Career Progression, Economic Downturns, and Skills

Adda, Jerome; Meghir, Costas; Dustmann, Christian; … - National Bureau of Economic Research (NBER) - 2013

This paper analyzes the career progression of skilled and unskilled workers, with a focus on how careers are affected by economic downturns and whether formal skills, acquired early on, can shield workers from the effect of recessions. Using detailed administrative data for Germany for numerous...

Persistent link: https://www.econbiz.de/10010618278

Spatial Errors in Count Data Regressions

Moser, Petra; Bertanha, Marinho - National Bureau of Economic Research (NBER) - 2014

Count data regressions are an important tool for empirical analyses ranging from analyses of patent counts to measures of health and unemployment. Along with negative binomial, Poisson panel regressions are a preferred method of analysis because the Poisson conditional fixed effects maximum...

Persistent link: https://www.econbiz.de/10010887106

Estimating Derivatives in Nonseparable Models with Limited Dependent Variables

Altonji, Joseph G.; Ichimura, Hidehiko; Otsu, Taisuke - National Bureau of Economic Research (NBER) - 2008

We present a simple way to estimate the effects of changes in a vector of observable variables X on a limited dependent variable Y when Y is a general nonseparable function of X and unobservables. We treat models in which Y is censored from above or below or potentially from both. The basic idea...

Persistent link: https://www.econbiz.de/10005774908

Inverse Probability Tilting for Moment Condition Models with Missing Data

Graham, Bryan S.; Pinto, Cristine Campos de Xavier; … - National Bureau of Economic Research (NBER) - 2008

We propose a new inverse probability weighting (IPW) estimator for moment condition models with missing data. Our estimator is easy to implement and compares favorably with existing IPW estimators, including augmented inverse probability weighting (AIPW) estimators, in terms of efficiency,...

Persistent link: https://www.econbiz.de/10005777945

Identification and Estimation of 'Irregular' Correlated Random Coefficient Models

Graham, Bryan S.; Powell, James - National Bureau of Economic Research (NBER) - 2008

In this paper we study identification and estimation of a correlated random coefficients (CRC) panel data model. The outcome of interest varies linearly with a vector of endogenous regressors. The coefficients on these regressors are heterogenous across units and may covary with them. We...

Persistent link: https://www.econbiz.de/10005778582

Understanding Earnings Dynamics: Identifying and Estimating the Changing Roles of Unobserved Ability, Permanent and Transitory Shocks

Lochner, Lance; Shin, Youngki - National Bureau of Economic Research (NBER) - 2014

We consider a general framework to study the evolution of wage and earnings residuals that incorporates features highlighted by two influential but distinct literatures in economics: (i) unobserved skills with changing non-linear pricing functions and (ii) idiosyncratic shocks with both...

Persistent link: https://www.econbiz.de/10010821837

When to Control for Covariates? Panel-Asymptotic Results for Estimates of Treatment Effects

Angrist, Joshua; Hahn, Jinyong - National Bureau of Economic Research (NBER) - 1999

The problem of how to control for covariates is endemic in evaluation research. Covariate-matching provides an appealing control strategy, but with continuous or high-dimensional covariate vectors, exact matching may be impossible or involve small cells. Matching observations that have the same...

Persistent link: https://www.econbiz.de/10005725318

Estimating the Impact of Climate Change on Crop Yields: The Importance of Nonlinear Temperature Effects

Schlenker, Wolfram; Roberts, Michael J. - National Bureau of Economic Research (NBER) - 2008

The United States produces 41% of the world's corn and 38% of the world's soybeans, so any impact on US crop yields … will have implications for world food supply. We pair a panel of county-level crop yields in the US with a fine …-scale weather data set that incorporates the whole distribution of temperatures between the minimum and maximum within each day and …

Persistent link: https://www.econbiz.de/10005830956

Firm Level Investment and R&D in France and the United States: A Comparison

MULKAY, Benoît; Hall, Bronwyn H; MAIRESSE, Jacques - National Bureau of Economic Research (NBER) - 2000

This paper is a contribution to the small but growing literature that compares the investment and R&D behavior of manufacturing firms in large developed countries that have varying financial and capital market institutions. Specifically, we look at two similar samples of French and United States...

Persistent link: https://www.econbiz.de/10005774540