population stratification
[ˌpɒpjuˈleɪʃən ˌstrætɪfɪˈkeɪʃən]
nounpl: population stratifications
estratificação populacional
1. The division of a population into distinct layers or groups based on socioeconomic status, education, income, occupation, or other hierarchical criteria
Population stratification in urban areas often reflects differences in wealth and access to services.
A estratificação populacional em áreas urbanas frequentemente reflete diferenças de riqueza e acesso a serviços.
2. In genetics and epidemiology, the variation in allele frequencies across different subpopulations due to ancestry, migration, or non-random mating
Researchers must account for population stratification when conducting genome-wide association studies.
Os pesquisadores devem levar em conta a estratificação populacional ao realizar estudos de associação do genoma.
3. In statistics and sampling, the division of a population into homogeneous subgroups to improve sampling efficiency
Population stratification allows researchers to ensure representative sampling across different demographic groups.
A estratificação populacional permite que os pesquisadores garantam uma amostragem representativa entre diferentes grupos demográficos.
The concept of population stratification is extensively studied in Brazilian sociology and public health due to significant socioeconomic disparities across the country. In the USA, it is a critical term in epidemiology, genetics research, and urban planning. Understanding population stratification is essential for addressing health disparities, designing equitable public policies, and conducting unbiased scientific research.
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