For further information on our approach to statistics and research during COVID-19 see the Chief Statistician’s statement on COVID-19 and the production of statistics and social research.
Am fwy o wybodaeth am ein ymarferion ystadegau a ymchwil drwy COVID-19 gweler datganiad y Prif Ystadegydd ar COVID-19 a chynhyrchu ystadegau ac ymchwil gymdeithasol.