Bicop: A Command for Fitting Bivariate Ordinal Regressions with Residual Dependence Characterized by a Copula Function and Normal Mixture Marginals. (March 2016)

• Record Type: Journal Article
• Authors: Hernández-Alava, Mónica; Pudney, Stephen
• Is Part Of: Stata journal. Volume 16:Number 1(2016)
• Page Start: 159
• Page End: 184
• Publication Date: 2016-03
• Subjects: st0429 -- bicop -- bivariate ordinal regression -- copula -- mixture model; Statistics -- Periodicals; Statistics -- Computer programs -- Periodicals; 001.422
• DOI: 10.1177/1536867X1601600114
• Languages: English
• ISSNs: 1536-867X

Abstract

In this article, we describe a new Stata command, bicop, for fitting a model consisting of a pair of ordinal regressions with a flexible residual distribution, with each marginal distribution specified as a two-part normal mixture, and stochastic dependence governed by a choice of copula functions. Thebicop command generalizes the existingbiprobit andbioprobit commands, which assume a bivariate normal residual distribution. We present and explain thebicop estimation command and the available postestimation commands using data on financial well-being from the UK Understanding Society Panel Survey.