Some of this change is due to the change in reporting of recovering patients introduced on 12 April 2021 (please see Quality and methodology section for more detail).
Mae rhywfaint o'r newid hwn yn ganlyniad o newid yn yr adrodd o gleifion sy'n gwella, a gyflwynwyd ar 12 Ebrill 2021 (gweler yr adran Ansawdd a methodoleg am fwy o fanylion).