require: Package dependencies for reproducible research

1 code implementation • 20 Sep 2023 • Sergio Correia, Matthew P. Seay

The ability to conduct reproducible research in Stata is often limited by the lack of version control for community-contributed packages.

Pandemics Depress the Economy, Public Health Interventions Do Not: Evidence from the 1918 Flu

no code implementations • 24 Jul 2022 • Sergio Correia, Stephan Luck, Emil Verner

We study the impact of non-pharmaceutical interventions (NPIs) on mortality and economic activity across U. S. cities during the 1918 Flu Pandemic.

Digitizing Historical Balance Sheet Data: A Practitioner's Guide

1 code implementation • 31 Mar 2022 • Sergio Correia, Stephan Luck

This paper discusses how to successfully digitize large-scale historical micro-data by augmenting optical character recognition (OCR) engines with pre- and post-processing methods.

Optical Character Recognition Optical Character Recognition (OCR)

Verifying the existence of maximum likelihood estimates for generalized linear models

2 code implementations • 5 Mar 2019 • Sergio Correia, Paulo Guimarães, Thomas Zylkin

A fundamental problem with nonlinear models is that maximum likelihood estimates are not guaranteed to exist.

ppmlhdfe: Fast Poisson Estimation with High-Dimensional Fixed Effects

1 code implementation • 5 Mar 2019 • Sergio Correia, Paulo Guimarães, Thomas Zylkin

In this paper we present ppmlhdfe, a new Stata command for estimation of (pseudo) Poisson regression models with multiple high-dimensional fixed effects (HDFE).

Econometrics