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twopm: two-part models

Belotti, Federico, Deb, Partha, Manning, Willard G. and Norton, Edward C. (2015) twopm: two-part models. Stata Journal, 15 (1). pp. 3-20. ISSN 1536-867X

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Abstract

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 regression model is fit for the positive outcome. The twopm command allows the user to leverage the capabilities of predict and margins to calculate predictions and marginal effects and their standard errors from the combined first- and second-part models.

Item Type: Article
Official URL: http://www.stata-journal.com/
Additional Information: © 2015 by StataCorp LP
Divisions: Personal Social Services Research Unit
Subjects: H Social Sciences > HA Statistics
Q Science > QA Mathematics
Sets: Research centres and groups > Personal Social Services Research Unit (PSSRU)
Date Deposited: 28 Apr 2015 09:17
Last Modified: 20 May 2019 01:47
URI: http://eprints.lse.ac.uk/id/eprint/61763

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