[Note 1] Prescribing units are calculated from the number of patients registered at GP practices mid-way through the financial year, in October 2022.
‌[Nodyn 1] Defnyddir nifer y cleifion sydd wedi cofrestru â phractisau meddygon teulu hanner ffordd drwy'r flwyddyn ariannol i gyfrifo unedau rhagnodi, ym mis Hydref 2022.