Investigating whether Millennium Cohort Study (MCS) data can be used to investigate factors affecting mental health and wellbeing of young people in Wales.
Ymchwilio a ellir defnyddio data Astudiaeth Cohort y Mileniwm i ymchwilio i ffactorau sy'n effeithio ar iechyd meddwl a lles pobl ifanc yng Nghymru.