Statistics from antenatal, birth, and child health records including smoking during pregnancy, breastfeeding and birthweights for children born in Wales in 2020.
Ystadegau o gofnodion cynenedigol, genedigaethau a iechyd plant, gan gynnwys ysmygu yn ystod beichiogrwydd, bwydo ar y fron a phwysau geni plant a anwyd yng Nghymru yn 2019.