There was some variation between the local health boards, with highest sickness absence rate in Swansea Bay (7.7%) and the lowest rate in Powys (5.9%).
Roedd rhywfaint o amrywiaeth ymhlith y byrddau iechyd lleol, gyda chyfradd uchaf yr absenoldeb oherwydd salwch i’w gweld ym Mae Abertawe (7.7%) a’r gyfradd isaf ym Mhowys (5.9%).