El objetivo de esta presentación es mostrar el uso de modelos econométricos cuando se tienen variables de tipo contable, es decir, en términos de simples conteos. La aplicación se hace a considerando la información proveniente de una muestra de académicos levantada durante 2008-09 en...

In this talk, we present the updated versions of some simple, improved programs for nonparametric smoothing. These updated ado programs remain simple and versatile—mainly with the Stata command style—but now they have Stata’s version 11 syntax, a change that becomes apparent overall in the...

This talk considers robust inference for regression models where data are clustered, with correlation of observations in the same cluster (such as state) and independence across clusters. The talk will range from the simplest case of heteroskedastic-ro bust (one individual per cluster) through...

Una de las principales necesidades que involucran el manejo de información proveniente de encuestas periódicas es la generación sistemática de estadísticos y tabulados para el análisis. En esta presentaci&oacut e;n, realizamos un ejercicio comparativo mediante comandos Stata y Mata...

We propose an estimator for models in which an endogenous dichotomous treatment affects a count outcome in the presence of either sample selection or endogenous participation using maximum simulated likelihood. We allow for the treatment to have an effect on both the participation or the sample...

Este trabajo tiene como objetivo examinar las tendencias de mediano plazo del comportamiento de los hogares beneficiarios del Programa Oportunidades en las zonas urbanas. Especícamente, se estudian las tendencias en los siguientes aspectos sociales: e l consumo alimentario y no alimentario,...

The purpose of this presentation is to show the common mistakes in the analysis of complex surveys. In Mexico, we have a significant number of complex surveys available, which cover (among other issues) household income and expenditures, the labor market, consumer confidence, public security...

Esta presentación muestra los beneficios que ofrece al usuario el paquete de Análisis Distributivo en Stata (DASP) para la evaluación del bienestar y su distribución, la medición de la pobreza y la desigualdad, y la m anera en que los datos requeridos por DASP se relacionan con temas...

Simulating data is a powerful tool for understanding statistical models and for spotting identification problems. I will use simulation techniques to explain the building blocks for linear mixed models, and I will also show how to estimate the parameters using the xtmixed command. Using these...

In Paleobotany, the features of leaf laminae linked to the climate have been used to infer past climatic conditions. However, in spite of the increasing number of paleoecological studies, studies worldwide have been focused on the angiosperms, leaving aside other important groups throughout...