Efecto de cohorte en la evolución de la mortalidad por enfermedad de la motoneurona en España, 1951-1992

• Autores: Francisco Javier Llorca Díaz, Dolores Prieto Salceda, Miguel Delgado Rodríguez
• Localización: Revista española de salud pública, ISSN 1135-5727, ISSN-e 2173-9110, Vol. 73, Nº. 4, 1999, págs. 477-484
• Idioma: español
• DOI: 10.1590/s1135-57271999000400005
• Títulos paralelos:
  • The analysis of the cohort effect on the trend in the mortality due to motor neuron disease in Spain 1951-1992
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• Resumen
  • español

    FUNDAMENTO: Se ha descrito un aumento en la mortalidad por enfermedad de la motoneurona (EMN) en España en las últimas décadas; se ha sugerido que este aumento se debe a un efecto de cohorte, pero esta hipótesis no ha sido comprobada. MÉTODOS: Los datos de mortalidad por edad y sexo debido a la EMN se han obtenido del Instituto Nacional de Estadística. Se han calculado las tasas de mortalidad específicas por edad y las tasas ajustadas por edad. Mediante regresión de Poisson se ha analizado el efecto de la cohorte de nacimiento en la mortalidad por edades; el efecto de cohorte fue también analizado por métodos gráficos. RESULTADOS: La mortalidad ajustada por edad descendió hasta 1969 y aumentó desde entonces. Cada cohorte quinquenal de nacimiento aumenta en un 8,5% el riesgo de morir por EMN. CONCLUSIONES: El aumento de la mortalidad por EMN en España está causado por un efecto de cohorte.

  • English

    BACKGROUND: An increase in the mortality due to motor neuron disease (MND) has been reported in Spain over the past 30-40 years. It has been suggested that this increase is due to the cohort effect, but his hypothesis has not been proven. METHODS: The motor neuron disease (MND) mortality statistics by age and by gender were furnished from the Spanish National Institute of Statistics. The mortality specifically by age and the adjusted age-related rates were calculated. By Poisson regression, the cohort effect of birth on the mortality by ages has been analyzed, the cohort effect also having been analyzed by graphic methods. RESULTS: The mortality adjusted by age was declining up until 1969, as of which time it has been on the rise. Each five-year birth cohort increases the risk of dying from MND by 8.5%.) CONCLUSIONS: The increase in the mortality due to MND in Spain is the result of a cohort effect.

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