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      Validation study of the Multicultural Quality of Life Index (MQLI) in a Peruvian sample Translated title: Estudo de validação do Índice de Qualidade Multicultural (IQVM) em uma amostra peruana

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          Abstract

          OBJETIVE: The Multicultural Quality of Life Index is a concise instrument for comprehensive, culture-informed, and self-rated assessment of health-related quality of life. It is composed of 10 items (from physical well-being to global perception of quality of life). Each item is rated on a 10-point scale. The objective was to evaluate the reliability (test-retest), internal structure, discriminant validity, and feasibility of the Multicultural Quality of Life Index in Lima, Peru. METHOD: The reliability was studied in general medical patients (n = 30) hospitalized in a general medical ward. The Multicultural Quality of Life Index was administered in two occasions and the correlation coefficients ("r") between both interviews were calculated. Its discriminant validity was studied statistically comparing the average score in a group of patients with AIDS (with presumed lower quality of life, n = 50) and the average score in a group of dentistry students and professionals (with presumed higher quality of life, n = 50). Data on its applicability and internal structure were compiled from the 130 subjects. RESULTS: A high reliability correlation coefficient (r = 0.94) was found for the total score. The discriminant validity study found a significant difference between mean total score in the samples of presumed higher (7.66) and lower (5.32) quality of life. The average time to complete the Multicultural Quality of Life Index was less than 4 minutes and was reported by the majority of subjects as easily applicable. A high Cronbach's a (0.88) was also documented. CONCLUSIONS: The results reported that the Multicultural Quality of Life Index is reliable, has a high internal consistency, is capable of discriminating groups of presumed different quality of life levels, is quite efficient, and easy to use.

          Translated abstract

          OBJETIVO: O Índice Multicultural de Qualidade de Vida é um instrumento conciso para a avaliação ampla, culturalmente informada e auto-aplicável da qualidade de vida relativa à saúde. É composto de 10 itens (do bem-estar físico à percepção global da qualidade de vida). Cada item é classificado de acordo com uma escala de 10 pontos. O objetivo foi o de avaliar a confiabilidade (teste-reteste), estrutura interna, validade discriminante e a viabilidade do Índice Multicultural de Qualidade de Vida em Lima, Peru. MÉTODO: A confiabilidade foi estudada em pacientes da clínica geral (n = 30) hospitalizados em uma enfermaria clínica geral. O Índice Multicultural de Qualidade de Vida foi ministrado em duas ocasiões e os coeficientes de correlação ("r") entre ambas as entrevistas foram calculados. Sua validade discriminante foi estudada comparando estatisticamente o escore médio em um grupo de pacientes com AIDS (com presumida menor qualidade de vida, n = 50) e o escore médio em um grupo de estudantes e profissionais de odontologia (com presumida maior qualidade de vida, n = 50). Os dados sobre sua aplicabilidade e estrutura interna foram compilados a partir de 130 indivíduos. RESULTADOS: Achou-se um alto coeficiente de correlação de confiabilidade no escore total (r = 0,94). O estudo de validade discriminante encontrou diferença significativa entre o escore médio total nas amostras de qualidade de vida presumida mais alta (7,66) e mais baixa (5,32). O tempo médio para completar o Índice Multicultural de Qualidade de Vida foi de menos de 4 minutos e foi relatado pela maioria dos indivíduos como facilmente aplicável. Foi também documentado um alto alfa de Cronbach (0,88). CONCLUSÕES: Os resultados relatam que o Índice Multicultural de Qualidade de Vida é confiável, possui uma alta consistência interna, é capaz de discriminar grupos de diferentes níveis de qualidade de vida presumidos, é muito eficiente e é de fácil utilização.

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          Clinical and public health perspectives and applications of health-related quality of life measurement.

          Health-related quality of life (HRQL) measures have been developed from the utilitarian ethical perspective of public health medicine which may be contrasted with individual-centered indicators; these emphasise the unique experience of a patient. The impairment-disability-handicap framework provides a more complete description of disease consequences and health outcomes than a generic HRQL indicator. The assessment of reliability and validity of HRQL indicators is often carried out inappropriately: population repeatability is measured when an indicator will be used to examine changes in individuals; between observer variation may be large compared with variation between populations. Content and construct validity are usually measured but the more important predictive validity is neglected. Effect sizes of HRQL indicators are likely to be inflated by use of between subject estimates of variance but the more appropriate within subject variance is seldom reported. HRQL indicators are of very limited value for many clinical and public health tasks: monitoring health of individuals and populations; evaluating the effects of health and social policy; allocating resources; evaluating the effects of treatment. Alternative methods of assessment derived from the impairment-disability-handicap conceptual framework are preferable.
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            Discriminant and criterion validation of the US-Spanish version of the SF-36 Health Survey in a Cuban-American population with benign prostatic hyperplasia.

            The study tested the validity of the Medical Outcomes Study 36-Item Short-Form (SF-36) Health Survey (originally validated in the Mexican-American population) in a different Spanish subgroup to determine whether the Spanish version is equally applicable to the Cuban-American population. Individuals with and without benign prostatic hyperplasia served as the study sample. The SF-36 scores of 264 individuals with benign prostatic hyperplasia were compared with those of 273 individuals without benign prostatic hyperplasia to determine discriminant and criterion validity. These individuals were assigned to one of the following groups: non-Hispanic subjects, Cuban subjects who took the English version, and Cuban subjects who took the Spanish version. MANOVA with planned comparisons was used for this analysis. In all three culture/language groups, the quality-of-life scores of individuals without benign prostatic hyperplasia were significantly different than those of benign prostatic hyperplasia individuals. These results demonstrated that the English and Spanish versions can differentiate between individuals with and without benign prostatic hyperplasia. Moreover, the quality-of-life scores of Cuban subjects with and without benign prostatic hyperplasia who took the English version were statistically similar to those of their counterparts who took the Spanish version. The US-Spanish version of the SF-36 appears to be valid when used to measure health status in Cuban-American subjects with benign prostatic hyperplasia. Further studies should be conducted to verify the validity of the US-Spanish version of the SF-36 for other health conditions.
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              Índice de calidad de vida: estandarización y características psicométricas en una muestra española

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbp
                Revista Brasileira de Psiquiatria
                Rev. Bras. Psiquiatr.
                Associação Brasileira de Psiquiatria - ABP (São Paulo )
                1809-452X
                March 2006
                : 28
                : 1
                : 24-28
                Affiliations
                [1 ] Icahn School of Medicine at Mount Sinai United States
                [2 ] Universidad Peruana Cayetano Heredia Peru
                Article
                S1516-44462006000100006
                10.1590/S1516-44462006000100006
                16612486
                384a1a0a-36b3-4c58-8037-9baf1911321f

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-4446&lng=en
                Categories
                PSYCHIATRY

                Clinical Psychology & Psychiatry
                Quality of life,Acquired Immunodeficiency Syndrome,HIV,Validity,Reproducibility of results,Qualidade de vida,Síndrome de Imunodeficiência Adquirida,Validade,Reprodutibilidade de resultados

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