The demand for a healthy diet: estimating the almost ideal demand system with infrequency of purchase

R Tiffin, M Arnoult

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A Bayesian method of estimating multivariate sample selection models is introduced and applied to the estimation of a demand system for food in the UK to account for censoring arising from infrequency of purchase. We show how it is possible to impose identifying restrictions on the sample selection equations and that, unlike a maximum likelihood framework, the imposition of adding up at both latent and observed levels is straightforward. Our results emphasise the role played by low incomes and socio-economic circumstances in leading to poor diets and also indicate that the presence of children in a household has a negative impact on dietary quality.
Original languageEnglish
Pages (from-to)501 - 521
Number of pages21
JournalEuropean Review of Agricultural Economics
Volume37
Issue number4
Publication statusFirst published - 2010

Keywords

  • Almost ideal demand system
  • Bayesian estimation
  • Censoring
  • Diet and health

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