31 Dec 2021 data: 30 practices out of the 390 active practices did not confirm their data was up-to-date in the quarter up to 31 Dec 2021.
Data 31 Rhag 2021: Ni wnaeth 30 o bractisau o'r 390 o bractisau gweithredol gadarnhau bod eu data’n gyfredol yn y chwarter hyd at 31 Rhag 2021.