Day: December 19, 2019

Health Economics, vol. 15, pp. 665 – 676.

Autores: José-María Abellán-Perpiñán, José-Luis Pinto-Prades, Ildefonso Méndez-Martínez y Xabier Badía-Llach

Summary

This paper presents a test of the predictive validity of various classes of QALY models (i.e. linear, power and exponential models). We first estimated TTO utilities for 43 EQ-5D chronic health states and next these states were embedded in nonchronic health profiles. The chronic TTO utilities were then used to predict the responses to TTO questions with nonchronic health profiles. We find that the power QALY model clearly outperforms linear and exponential QALY models. Optimal power coefficient is 0.65. Our results suggest that TTO-based QALY calculations may be biased. This bias can be corrected using a power QALY model.

Revista Ekonomiaz, Nº. 60(1), pp. 192 – 209.

Autores: José Luis Pinto Prades y Jorge E. Martínez Pérez.

El presente trabajo pretende obtener una estimación del valor monetario del año de vida ajustadopor la calidad (AVAC). Para realizar dicha estimación de un modo directo, a través de la disposi-ción a pagar, se puede partir tanto de ganancias pequeñas de salud como de grandes ganancias.Se ha obtenido un intervalo para el valor monetario del AVAC comprendido entre 9.000 y38.000€, si bien resultan necesarias investigaciones adicionales sobre los efectos que para la de-terminación del mismo tienen los estados de salud empleados, su duración y, especialmente, losllamados «efectos de orden», causados por las diferentes secuencias a que dan lugar las combina-ciones de ambos.

Health Economics, vol. 14, pp. 69-82

Autores: Jose-Luis Pinto-Prades y José-María Abellán-Perpiñán.

Summary

We report the results from two surveys designed to explore whether an application of Harsanyi’s principle of choice form behind a veil of ignorance (VEI) can be used in order to measure the health of populations. This approach was tentatively recommended by Murray et al.(Bull. World Health Organ 2000; 78: 981–994; Summary Measures of population health: Concepts, Ethics, Measurement and Applications, WHO, 2002.) as an appropriate way of constructing summary measures of population health (SMPH) for comparative purposes. The operationalization of the VEI approach used in this paper was suggested by Nord (Summary Measures of Population Health: Concepts, Ethics, Measurement and Applications, WHO, 2002.). We test if VEI and person trade-off (PTO) methods generate similar quality-of-life weights. In addition, we compare VEI and PTO weights with individual utilities estimated by means of the conventional standard gamble (SG) and a variation of it we call double gamble. Finally, psychometric properties like feasibility, reliability, and consistency are examined. Our main findings are next: (1) VEI and PTO approaches generate very different weights; (2) it seems that differences between PTO and VEI are not due to the ‘rule of rescue’; (3) the VEI resembled more a DG than a classical SG; (4) PTO, VEI, and DG exhibited good feasibility, reliability and consistency.

Journal of Health Economics, vol 22, pp. 1037 – 1052.

Autores: Han Bleichrodt, Jose Luis Pinto, José María Abellán-Perpiñán.

Abstract:

This paper tests the internal consistency of time trade-off utilities. We find significant violationsof consistency in the direction predicted by loss aversion. The violations disappear for higher gaugedurations. We show that loss aversion can also explain that for short gauge durations time trade-offutilities exceed standard gamble utilities. Our results suggest that time trade-off measurements thatuse relatively short gauge durations, like the widely used EuroQol algorithm, are affected by lossaversion and lead to utilities that are too high.