A juicio de los autores, este descenso sugiere que los factores ambientales desempeñan un papel causal en la artritis reumatoide. Revisaron las historias clínicas de los habitantes de la ciudad de Rochester para investigar las tendencias en la incidencia y mortalidad causada por la enfermedad entre 1955 y 1994.
La edad media en el momento del diagnóstico, 58 años, se mantuvo estable a lo largo del período estudiado. Globalmente, la incidencia ha declinado progresivamente, disminuyendo de 61,2 casos por cada 100.000 habitantes en 1955 a 32,7 por 100.000 entre 1985 y 1994. Es de destacar que la reducción ha sido más marcada en el sexo femenino.
Por lo que atañe a la supervivencia, los afectados por artritis reumatoide viven menos tiempo que la población general. El riesgo de muerte es entre los pacientes un 27% mayor que para el resto de ciudadanos.
Webs Relacionadas
Mayo Clinic
http://www.mayo.edu/
Arthritis & Rheumatism
http://www.interscience.wiley.com/
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