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Notas: Quality adjusted life years (QALYs) and willingness to pay (WTP) are alternative measures of the value of reductions in health risk that are often used in evaluating environmental, health, and safety practices. Although both methods are based on individual preferences, the underlying assumptions differ. The different bases yield systematically differents conclusions about the relative value of reducing health and mortality risks to individuals that differ in age, preexisting health conditions, income, and other factors. The choice of which method to use depends on judments about what constraints should be placed on individual preferences and what factors should be considered in aggregating preferences across peopleRegistros relacionados: En: Risk analysis : an international journal. - New York and London : Society for Risk Analysis. - Vol. 22, nº 5, October, 2002 ; p. 985-1001Materia / lugar / evento: Enfermedades Evaluación de riesgos Análisis de riesgos Riesgo personal Valoración de riesgos Control de riesgos Factores de riesgo Investigación científica Sistemas de medición Salud Otras clasificaciones: 931

QALYs Versus WTP