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Dewis pwnc arall neu clirio pob hidlydd.
Nid yw holl gynnwys y cyfrifia wedi'i ryddhau. Edrychwch am ddatganiadau sydd i ddod ar y calendr datganiadau. Fel arall, gallwch greu set ddata eich fun.
Rhyddhawyd ar: 15 June 2022 | Bwletin ystadegol
Analysis of COVID-19 findings on mental health and long COVID from the Schools Infection Survey’s headteacher, parent and pupil questionnaires. The Schools Infection Survey is jointly led by the London School of Hygiene and Tropical Medicine, UK Health Security Agency and the Office for National Statistics.
Rhyddhawyd ar: 22 December 2025 | Cyfres amser
Rhyddhawyd ar: 19 December 2025 | Cyfres amser
Rhyddhawyd ar: 31 October 2025 | Cyfres amser
