The Need for Formal Evidence Synthesis in Food Policy: A Case Study of Willingness-to-Pay.

ABSTRACT: Meta-analysis is increasingly utilised in the understanding of consumer behaviour, including in relation to farm animal welfare. However, the issue of publication bias has received little attention. As willingness-to-pay (WTP) is widely used in policy, it is important to explore publication bias. This research aimed to evaluate publication bias in WTP, specifically public WTP for farm animal welfare. A systematic review of four databases yielded 54 studies for random effects meta-analysis. Publication bias was assessed by the Egger test, rank test, contour-enhanced funnel plots, and the Vevea and Hedges weight-function model. Results consistently indicated the presence of publication bias, highlighting an overestimation of WTP for farm animal welfare. Stakeholders should be wary of WTP est

SUBMITTER: Clark B 

PROVIDER: S-EPMC5366842 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature