The Puerto Rico and New York State tumor registries: problems associated with the use of cancer incidence data in migrant studies

Este artículo discute los problemas relacionados con la compatibilidad de información entre los registros de cáncer de Puerto Rico y de el estado de New York. Estos problemas pueden aplicar-se a investigaciones que comparan la tasa de la incidencia de cáncer entre los registros de cáncer. Las discrepancias en información entre los dos registros de cáncer se deben a diferencias en el control de calidad de cada registro, reportaje excesivo o incompleto, los indicadores de confianza, y los criterios usados para definir los casos. Un estudio comparando las tasas de incidencia de cáncer de estómago entre Puerto Rico y puertorriqueños residentes en la ciudad de New York proveyeron la base necesaria para el estudio

Stomach cancer in a native and migrant population in Puerto Rico and New York city, 1975 to 1979

This study compares age-adjusted stomach cancer incidence and mortality rates, by sex, among Puerto Rican-born residents of New York City (NYC/PR) and Puerto Rico (PR/PR) for the time period 1975 through 1979. One, three, and five observed survival for cases diagnosed between 1975 and 1977 were compared. The resultsw indicate that age-adjusted stomach cancer incidence rates ér 100,000 among NYC/PR males (58.94) and females (27.58) were slightly compared to rates among PR/PR males (54.48) and females (25.73), while age-adjisted mortality rates were substantially higher among PR/PR males (46.38 vs 37.29) females (22.76 vs 17.84), although these differences were not statistically significant . Differentials in observed survival consistently favored NYC/PR after one (43%) vs. 35%), three (20% vs 14%), and five years (11%) vs. 9%) of follow-up