Funciones modelo de migración: límites y aplicaciones
DOI:
https://doi.org/10.20947/S0102-3098a0101Palabras clave:
Modelo de Rogers-Castro, Función de migración estándar de edad, BrasilResumen
La migración es un evento demográfico altamente selectivo por edad y interdependiente entre grupos de edad. La necesidad de estimar los patrones de migración como entrada para las proyecciones demográficas motivó a Andrei Rogers y sus colaboradores a desarrollar lo que se conoció como el modelo de Rogers-Castro, o funciones del modelo de migración. Este artículo hace uma discussíon del modelo, sus limites y potencialidad de aplicación e estúdios demográficos. A pesar de describir razonablemente bien el patrón migratorio por edad, la dificultad de estimación y la inestabilidad de los parámetros se convierten en obstáculos para la aplicación del modelo. A pesar de sus limitaciones, sus ventajas analíticas y de proyección
aún no se han superado, siendo un buen predictor del patrón de la función de migración en situaciones de datos escasos o poco confiables. Finalmente, el modelo de Rogers-Castro funciona bien al describir la migración doméstica a escala nacional del Censo Demográfico Brasileño de 2010. Otros estudios en unidades territoriales más pequeñas o con el tiempo, con fuentes alternativas, son propuestas como aplicaciones potenciales del modelo.
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