This paper explores the distribution of the technical efficiencies across German manufacturing industries and looks at the association of technical efficiency to other economic categories. Aggregating 1995 to 2001 firm-level data yields an unbalanced panel with 241 cross-sections (industries)....

Circular data are a large class of directional data, which are of interest to scientists in many fields, including biologists (movements of migrating animals), meteorologists (winds), geologists (directions of joints and faults), and geomorphologists (landforms, oriented stones). These examples...

This talk will describe some programs to fit generalized beta of the second kind, Singh-Maddala, Dagum, and lognormal distributions to data on income or indeed any other skewed variable of interest. The programs allow the key distributional parameters to vary with covariates, and also handle svy...

Children require not only financial expenditures but also expenditures of time; thus, the number of children and distribution of their births in time remains in conflict with the aspiration of parents after career and their quest for satisfactory work. Cost of child includes not only expenditures...

During a long history with a lot of people involved, Stata has grown and flourished. It seems, however, that the needs of the newcomer don't get the attention they deserve. I switched from SPSS to Stata three years ago, and I am happy now, but I still remember my initial troubles. Also, when...

Partially linear models are linear regression models where one component is allowed to vary nonparametrically. Generalized partially linear models generalize this case from linear regression to the quasi-likelihood setting of standard GLIMs, thus encompassing a larger class models including...

In this paper, we investigate the link between optimal level of leverage and macroeconomic uncertainty. Using the model of firm's value maximization, we show that as macroeconomic uncertainty increases, captured by an increase in the variability of industrial production or inflation, firms...

Estimating labor supply functions using a discrete rather than a continuous specification has become increasingly popular in recent years. The main advantage of the discrete choice approach compared to continuous specifications derives from the possibility to model nonlinearities in budget...

Stata dialogs are somewhat cumbersome and difficult to implement. However, they are also powerful and helpful, especially when used together with ado-files. With the help of the latter, dialogs can even be sort of dynamic, as the example I present shows. To my knowledge, this has never been done...

At the first German Stata Users Group meeting, Hildegard Schaeper raised the issue of tabulating multiple response sets with Stata. Hildegard presented two of her own programs to deal with multiple responses and identified a number of remaining problems. In my contribution, I will re-address the...