This paper empirically analyzes the influence of road proximity on HIVinfection using geographical data on road infrastructure and the Demographic and Health Surveys collected in six African countries. Firstly we show that living in proximity to a major road increases the individual risk of infection. This observed relationship is found to be sensitive to the use of the road and to be robust af...

How Important Is Selection? Experimental vs. Non-Experimental Measures of the Income Gains from Migration Measuring the gain in income from migration is complicated by non-random selection of migrants from the general population, making it hard to obtain an appropriate comparison group of non-migrants. This paper uses a migrant lottery to overcome this problem, providing an experimental measure...

Instrumental Variable Estimation of the Causal Effect of Hunger Early in Life on Health Later in Life Numerous studies have evaluated the effect of nutrition early in life on health much later in life by comparing individuals born during a famine to others. Nutritional intake is typically unobserved and endogenous, whereas famines arguably provide exogenous variation in the provision of nutriti...

We investigate whether trends in job satisfaction, which arguably signal trends in worker well-being, can be explained by changes in the quality of jobs. There were falls in job satisfaction in both Britain and Germany. Elsewhere job satisfaction has been either stable or declining very slowly. In many countries, the series of data on job satisfaction is too short to be confident that any secul...

The relationship between democracy and environment has always been controversial. Some scientists found that democracy had a positive impact on reducing environmental disruption. Other scholars claimed that democracy tends to accelerate environmental degradation. Ther are many studies focusing on main determinants of environmental degradation. More recently, democracy is considered to be one of...

This paper empirically analyzes the influence of proximity to road on HIV-infection using geographical data on road infrastructure and survey data collected by the Demographic and Health Surveys in six African countries. Firstly we show that living in proximity to a major road increases the individual risk of infection and that the observed relationship is sensitive to the use of the road. Seco...

This paper shows how recently developed regression-based methods for the decomposition of health inequality can be extended to incorporate individual heterogeneity in the responses of health to the explanatory variables. We illustrate our method with an application to the Canadian NPHS of 1994. Our strategy for the estimation of heterogeneous responses is based on the quantile regression model....

This paper considers the measurement of firm’s specific (in)efficiency while allows for the possible heterogeneous technologies adopted by different firms. A flexible stochastic frontier model with random coefficients is proposed to distinguish technical inefficiency from technological differences across firms. Posterior inference of the model is made possible via the simulation-based approach,...

Treatment Evaluation with Multiple Outcome Periods under Endogeneity and Attrition This paper develops a nonparametric methodology for treatment evaluation with multiple outcome periods under treatment endogeneity and missing outcomes. We use instrumental variables, pre-treatment characteristics, and short-term (or intermediate) outcomes to identify the average treatment effect on the outcomes ...

In this paper we consider a panel data model with error components that are both spatially and time-wise correlated. The model blends specifications typically considered in the spatial literature with those considered in the error components literature. We introduce generalizations of the generalized moments estimators suggested in Kelejian and Prucha (1999. A generalized moments estimator for ...