The purpose of the study is to contribute to generating an evidence base around what constitutes effective early life kaupapa Māori programming for tamariki and whānau that will lead to improved health outcomes in later life (across the lifespan) for tamariki. The study will investigate whether exposure to the Te Kōpae Piripono (early life programme) whānau development model may have resulted in positive outcomes for tamariki and whānau and what aspects of the model have most influenced whānau. The research takes an interface approach drawing on mātauranga Māori and Western science. The research will contribute to the development and scaling up of early life interventions for tamariki and their whānau that lead to improved health outcomes in later life in areas of substantial ethnic disparity for Māori (e.g. non-communicable diseases). Importantly the study will build the host organisation's research capacity to engage in a planned longitudinal research programme.