A Zero‐Inflated Regression Model for Grouped Data1. (26th December 2014)

• Record Type: Journal Article
• Authors: Brown, Sarah; Duncan, Alan; Harris, Mark N.; Roberts, Jennifer; Taylor, Karl
• Is Part Of: Oxford bulletin of economics and statistics. Volume 77:Number 6(2015:Dec.)
• Page Start: 822
• Page End: 831
• Publication Date: 2014-12-26
• Subjects: Economic history -- Periodicals; Great Britain -- Economic conditions -- Periodicals; 330.9
• DOI: 10.1111/obes.12086
• Languages: English
• ISSNs: 0305-9049

Abstract

<abstract abstract-type="main" id="obes12086-abs-0001"> <title>Abstract</title> <p>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.</p> </abstract>