Typical censoring models have mass points at the upper or lower tails, both of an otherwise continuous outcome distribution. In contrast, we consider a model with point in interior We refer to this as “bunching” and use it estimate parameters. For example, economic theory suggests that, for increasing marginal income tax rates, many taxpayers will report exactly threshold where rate increases. ...

Sommario Attraverso la diffusione dei Social Media è stata data agli utenti la possibilità di pubblicare contenuto sul Web senza intermediari e la possibilità di costituire relazioni a molteplici livelli. Ciò comporta il rischio di dare spazio a fonti poco affidabili e falsa informazione. In questo scenario è interessante verificare la bontà del contenuto generato dagli utenti nei siti di recen...

This paper presents a semi-nonparametric estimator for a series of generalized models that nest the Ordered Probit model and thereby relax the distributional assumptions in that model. It describes a new Stata command for the estimation of such models and presents an illustration of the approach.

Tables in some form or another are part and parcel of data management and analysis. The main general-purpose tabulation commands, tabulate, table, and tabstat, are reviewed and compared. When these do not provide a tabulation solution, one key strategy is to prepare the material for tabulation as a set of variables, after which the table itself can be presented with tabdisp or list. This is the...

Many applications involve a censored dependent variable and an endogenous independent variable. Chernozhukov et al. (2015) introduced a censored quantile instrumental variable estimator (CQIV) for use in those applications, which has been applied by Kowalski (2016), among others. In this article, we introduce a Stata command, cqiv, that simplifes application of the CQIV estimator in Stata. We s...