Browsing by Subject "SF 6D"

Now showing 1 - 4 of 4
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    Inverse probability weighted estimation of social tariffs: an illustration using the SF-6D value sets
    (Elsevier, 2011-12) Méndez Martínez, Ildefonso; Abellán Perpiñán, José María; Sánchez Martínez, Fernando I.; Martínez Pérez, Jorge E.; Economía Aplicada
    This paper presents a novel approach to model health state valuations using inverse probability weighting techniques. Our approach makes no assumption on the distribution of health state values, accommodates covariates in a flexible way, eschews parametric assumptions on the relationship between the outcome and the covariates, allows for an undetermined amount of heterogeneity in the estimates and it formally tests and corrects for sample selection biases. The proposed model is semi-parametrically estimated and it is illustrated with health state valuation data collected for Spain using the SF-6D descriptive system. Estimation results indicate that the standard regression model underestimates the utility loss that the Spanish general population assigns to departures from full health, particularly so for severe departures
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    Lowering the floor of the SF-6D Utility function: an application using Spanish data
    (Fundación BBVA, 2010-07) Abellán Perpiñán, José María; Sánchez Martínez, Fernando Ignacio; Martínez Pérez, Jorge Eduardo; Méndez Martínez, Ildefonso; Economía Aplicada
    This paper presents a new scoring algorithm for the SF-6D, one of the most popular preference-based health status measures. Previous algorithms suffer from a phenomenon called the „floor‟ effect (i.e., lack of sensitivity of the instrument for detecting health gains of individuals whose baseline health is poor). Our algorithm expands the range of utility scores in such a way that the „floor‟ effect vanishes. We get such a wider range thanks to the use of a lottery equivalent method through which preferences from a representative sample of Spanish general population are elicited. -----------
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    Midiendo la calidad de vida
    (2010-06-14) Martínez Pérez, Jorge Eduardo; Economía Aplicada; Facultad de Economía y Empresa; Grupo de Investigación en Economía de la Salud y Evaluación Económica
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    On the simultaneous relationship between the SF-6D index and satisfaction with life
    (Springer, 2013-12) Garrido, Silvia; Méndez Martínez, Ildefonso; Abellán, José María; Economía Aplicada
    This paper aims to examine whether life satisfaction and health-related quality of life (HRQoL) are simultaneously related, as well as to quantify the bias that occurs if simultaneity is not accounted for. The study sample consisted of 870 respondents, representative of the Spanish adult general population. Using a simultaneous equations system —with the satisfaction with life scale (SWLS) and the SF-6D index as outcome variables—, we found a simultaneous association between life satisfaction and HRQoL, although this relationship is heterogeneous in individual characteristics such as age and sex. More important, the fact of estimating the relationship between life satisfaction and HRQoL under a unidirectional approach severely underestimates the effect of life satisfaction on HRQoL and, to a lesser degree, the reverse direction effect. In consequence, policy decisions intended to improve satisfaction with life or HRQoL can be wrong if they rely on unidirectional estimates. Another relevant implication of this research is that, as a result of the simultaneous relationship between life satisfaction and HRQoL, not only health interventions may increase satisfaction with life, but also policies that improve life satisfaction can lead to positive side effects on HRQoL.