A Zero‐Inflated Regression Model for Grouped Data

10 Pages Posted: 27 Oct 2015

See all articles by Sarah Brown

Sarah Brown

University of Sheffield - Department of Economics; IZA Institute of Labor Economics

Alan Duncan

University of Nottingham - School of Economics; University of Melbourne - Melbourne Institute of Applied Economic and Social Research; Curtin University of Technology - Curtin Business School - Bentley Campus

Mark N. Harris

Curtin University

Jennifer Roberts

University of Sheffield

Karl Taylor

University of Sheffield - Department of Economics

Date Written: December 2015

Abstract

We introduce the (panel) zero‐inflated interval regression (ZIIR) model, which is ideally suited when data are in the form of groups, and there is an ‘excess’ of zero observations. We apply our new modelling framework to the analysis of visits to the general practitioner (GP) using individual‐level data from the British Household Panel Survey. The ZIIR model simultaneously estimates the probability of visiting the GP and the frequency of visits (defined by given numerical intervals in the data). The results show that different socio‐economic factors influence the probability of visiting the GP and the frequency of visits.

Suggested Citation

Brown, Sarah and Duncan, Alan and Harris, Mark N. and Roberts, Jennifer and Taylor, Karl B., A Zero‐Inflated Regression Model for Grouped Data (December 2015). Oxford Bulletin of Economics and Statistics, Vol. 77, Issue 6, pp. 822-831, 2015. Available at SSRN: https://ssrn.com/abstract=2680427 or http://dx.doi.org/10.1111/obes.12086

Sarah Brown (Contact Author)

University of Sheffield - Department of Economics

9 Mappin Street
Sheffield, S1 4DT
United Kingdom

IZA Institute of Labor Economics

P.O. Box 7240
Bonn, D-53072
Germany

Alan Duncan

University of Nottingham - School of Economics ( email )

University Park
Nottingham, NG7 2RD
United Kingdom

University of Melbourne - Melbourne Institute of Applied Economic and Social Research

Level 5, FBE Building, 111 Barry Street
Parkville, Victoria 3010
Australia

Curtin University of Technology - Curtin Business School - Bentley Campus ( email )

GPO Box U1987
Perth WA 6845
Australia

Mark N. Harris

Curtin University

Jennifer Roberts

University of Sheffield ( email )

Dept of Economics
9 Mappin St
Sheffield, S1 4DT
United Kingdom

HOME PAGE: http://www.shef.ac.uk/economics/

Karl B. Taylor

University of Sheffield - Department of Economics ( email )

9 Mappin Street
Sheffield, S1 4DT
United Kingdom

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