Servicios Personalizados
Revista
Articulo
Inglés (pdf)
Articulo en XML
Referencias del artículo
Traducción automática
Enviar articulo por emailIndicadores
Citado por SciELO 
Accesos
Links relacionados
Citado por Google 
Similares en
SciELO 
Similares en Google
Compartir
Permalink
Revista de Salud Pública
versión impresa ISSN 0124-0064
Resumen
GARCIA-MOLINA, Mario y CHICAIZA-BECERRA, Liliana A.. Anchoring bias in face-to-face Time-Trade-Off valuations of health states. Rev. salud pública [online]. 2017, vol.19, n.5, pp.686-690. ISSN 0124-0064. https://doi.org/10.15446/rsap.v19n5.60924.
Objective
To test whether anchoring (a cognitive bias) occurs during face-to-face interviews to value health states by Time-Trade-Off.
Methods
147 Colombian subjects (111 males, 36 females) valued five EQ-5D health states better than death during a face-to-face interview. Subjects were randomly assigned to two different starting points.
Results
Shapiro-Wilk test discarded normality, while non-parametric tests, including Kolmogorov-Smirnov and Wilcoxon-Mann-Whitney, showed that anchoring was significant in four out of five health states. A higher starting point increased the elicited value by 15 %-188 %. The size of the anchoring effect was not uniform among health states.
Conclusion
Anchoring effects may bias face-to-face Time Trade-Off valuations. The size of the anchoring effect is relevant enough for health policy.
Palabras clave : Heuristics; cost-benefit analysis; outcome assessment (health care); observer variation; bias; methods (source: MeSH, NLM).
