I will present and discuss the development of the large software project ADePT, which combines the computation kernel of Stata and the user interface written in C#. ADePT is a software platform for applied economic analysis. It is used widely in the World Bank and in many research institutions...

Stata provides a fairly extensive set of graphs. However sometimes users need to implement custom graphs, which are not yet available. In some cases it is possible to “tweak” a standard graph so that it results in the desired image; in other cases it is not possible. Stata uses complex system...

In this presentation, I cover how to use the new factor variables features in Stata 11. Stata’s new factor variables notation allows you to identify categorical covariates as factor variables, provides a convenient notation for specifying indicator variables without having to generate them,...

At the heart of many econometric models is a linear function and a normal error. Examples include the classical small-sample linear regression model and the probit, ordered probit, multinomial probit, tobit, interval regression, and truncated distribution regression models. Because the normal...

I have researched the economics of interactions on Statalist, based on the full population of exchanges from 1st of January to 30th of April 2009. Both the "demand side" - the questions asked on the list - and the "supply side" - the answers provided - are examined. Along the way, I have paid...

Stata 11 has new command gmm for estimating parameters by the generalized method of moments (GMM). gmm can estimate the parameters of linear and nonlinear models for cross-sectional, panel, and time-series data. In this presentation, I provide an introduction to GMM and to the gmm command.

In this presentation, I provide a brief overview of quasiexperimental methods of estimating causal impacts using Stata: panel data, matching and reweighting, instrumental variables, and regression discontinuity designs, emphasizing practical considerations. I pay particular attention to the...

In this presentation, I cover how to use Stata for survey data analysis assuming a fixed population. We will begin by reviewing the sampling methods used to collect survey data, and how they affect the estimation of totals, ratios, and regression coefficients. We will then cover the three...

In this presentation, we introduce the command frcount for estimating the fractional response model with an endogenous count variable. The endogeneity of the right-hand-side count variable is controlled for under the presence of unobserved heterogeneity. We briefly discuss the model, estimation...

Abstract genetic association studies often explore the relationship between diseases and collections of contiguous genetic markers located on the same chromosome (known as haplotypes). Haplotypes are usually not observed directly but are inferred statistically using a variety of algorithms. One...