Age of Migration and the Incidence of Cognitive Impairment: A Cohort Study of Elder Mexican-Americans.

Background And Objectives: To explore nativity and age of migration differentials in the incidence of cognitive impairment among older Mexican-Americans.

Research Design And Methods: We employ maximum-likelihood discrete time hazard models to estimate risk ratios of cognitive impairment in a sample of 2,708 Mexican-Americans 65 and older who were cognitively healthy at baseline over a follow-up period of up to 20 years.

Results: Late-life immigrant women have a 46% higher risk of cognitive impairment compared to U.