RESUMEN
Here we provide an update of the 2013 report on the Nigerian Twin and Sibling Registry (NTSR). The major aim of the NTSR is to understand genetic and environmental influences and their interplay in psychological and mental health development in Nigerian children and adolescents. Africans have the highest twin birth rates among all human populations, and Nigeria is the most populous country in Africa. Due to its combination of large population and high twin birth rates, Nigeria has one of the largest twin populations in the world. In this article, we provide current updates on the NTSR samples recruited, recruitment procedures, zygosity assessment and findings emerging from the NTSR.
Asunto(s)
Enfermedades en Gemelos/epidemiología , Salud Mental , Sistema de Registros/estadística & datos numéricos , Hermanos , Gemelos Dicigóticos/genética , Gemelos Monocigóticos/genética , Adolescente , Adulto , Tasa de Natalidad , Niño , Preescolar , Enfermedades en Gemelos/genética , Enfermedades en Gemelos/psicología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Nigeria/epidemiología , Adulto JovenRESUMEN
The South Korean Twin Registry (SKTR) is an ongoing nationwide volunteer registry of South Korean twins and their families. Since its inception, from preschooler to young adult, twins have been registered with the SKTR and have demonstrated that relative influences of genetic and environmental factors explaining individual differences in various psychological, mental health and physical traits in South Koreans are similar to those found in many Western twin studies. Currently, studies at the SKTR focus on identification of the process of gene-by-environment interactions as well as developmental differences in genetic and environmental influences on psychological and mental health traits in South Koreans. This report provides a brief overview, recruitment strategies, current samples, zygosity assessment, measures and future directions of the SKTR.
