This article describes sfcross and sfpanel, two new Stata commands for the estimation of cross-sectional and panel-data stochastic frontier models. sfcross extends the capabilities of the frontier command by including additional models (Greene, 2003, Journal of Productivity Analysis 19: 179–190;...

The resources channelled into Southern Italy’s industrial plants from outside have remained substantial over the years, accounting for 20 per cent of the employees and 25 per cent of the investments. These flows are reconstructed drawing on the Bank of Italy’s Invind business surveys, and...

In this article, we describe twopm, a command for fitting two-part models for mixed discrete-continuous outcomes. In the two-part model, a binary choice model is fit for the probability of observing a positive-versus-zero outcome. Then, conditional on a positive outcome, an appropriate...

Recent literature on panel data emphasizes the importance of accounting for time-varying unobservable individual effects, which may stem from either omitted individual characteristics or macro-level shocks that affect each individual unit differently. In this paper, we propose a simple...

Over the last decades spatial econometric models have represented a common tool for measuring spillover effects across different geographical entities (counties, provinces, regions or nations). The aim of this paper is to investigate the issue of measuring spatial spillovers in the presence of...

Using data from 1176 Italian municipalities in 2005, we identify factors associated with the development of e-government services supplied by local public administrations (PAs). We show that the combination of internal competencies and context-specific factors is different when explaining...