• Amelia Ceresuela López, Teófilo Lorente Aznar, José M Abad Díez, Carmen Cuerda Segurola, Belén Rodríguez Rodríguez, and Saúl Rubio Rubio.
• Centro de Salud de Landete. Cuenca. España. ameliaceresuela@terra.es
• Aten Primaria. 2008 Sep 1; 40 (9): 463-8.

ObjectiveTo evaluate the predictive value of the quality of life (QOL) questionnaire at 8 years and analyse which of its 5 dimensions better predict adverse results in health.DesignDescriptive, longitudinal, and retrospective study.SettingThree basic health areas in Cuenca province, Spain.ParticipantsWe randomly selected 519 subjects over 64 years, taking addresses in which more than 1 person over 64 years resided as a sample marker.Main MeasurementsThe QOL questionnaire was used to evaluate the quality of life of the subjects in 1994 and in 2002. Main results. Between 1994 and 2002, 25% of the participants died, 2.6% were institutionalised and there 3.6% losses. The QOL questionnaire has a mortality predictive capacity at 8 years, the cut off point of its global index being situated around 13 points. The sensitivity of the model is poor (41.5%), with a high specificity (93.5%) and a good classification percentage of 80.3%. The positive and negative probability ratios were 6.36 and 0.62, respectively. Using a Cox regression model, it is seen that of the 5 dimensions of the QOL test, activities of daily living show a relationship with mortality (risk ratio or OR=1.3; 95% confiance interval [CI], 1.049-1.611), mental health (OR=1.048; 95% CI, 1.054-1.620), and economic resources (OR=0.806; 95% CI, 0.648-1.003).ConclusionsThe QOL questionnaire has a mortality predictive capacity at 8 years.

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