a-torgovitsky/ivcrc

A Stata module for an instrumental variables correlated random coefficients estimator.

ivcrc: An Instrumental Variables Estimator for the Correlated Random Coefficients Model

Description: A Stata module for implementing the instrumental variables correlated random coefficients estimator proposed in Masten and Torgovitsky (2016) and analyzed in more detail in Masten and Torgovitsky (2014). The module also allows users to estimate varying coefficient models.

Authors: This module was written by David Benson, in collaboration with Matt Masten and Alexander Torgovitsky.

Requirements

• Stata version 12

Installation

In Stata, type "ssc install ivcrc". Or copy ivcrc.ado, _ivcrc_estimator.ado, and ivcrc.sthlp files to your Stata/ado/personal directory. See the Stata help file for explanation of the syntax.

Subdirectories

• Application - Files for our empirical illustration
• Test - Files for testing correctness of the module's output

Troubleshooting

Please post problems or suggestions to the issue queue.

References

Masten and Torgovitsky (2016) Identification of Instrumental Variable Correlated Random Coefficients Models, The Review of Economics and Statistics 98 (5), pp. 1001-1005

Masten and Torgovitsky (2014) Instrumental Variables Estimation of a Generalized Correlated Random Coefficients Model, Cemmap working paper CWP02/14

License

© 2018 David Benson, Matt Masten, Alexander Torgovitsky

The contents of this repository are distributed under the MIT license. See file LICENSE for details.

ivcrc's Issues

What is the meaning of fe in "ivcrc y (x=z), fe"? （no explanation in the help document)

Hi,
I am trying to run this program with fixed effects dummies using the i.identifier notation, and I can achieve it by adding "xi:" before the ivcrc comand. Luckily, I also found that ivcrc can be followed by a "fe" after the comma, like this "ivcrc y (x=z), fe", but there is no explanation in the help document . So, does the "fe" represent the fixed effect?
Best
Alan

"factor-variable and time-series operators not allowed" bug?

Hi,

I am trying to run this program with fixed effects dummies using the i.identifier notation, but I am getting a "factor-variable and time-series operators not allowed" error. It looks like the preliminaries section of the estimator code is missing a fvexpand command in the trim("`varcoef'")=="" case, but I am hardly an expert in stata and could be wrong.

Best,

Gerardo