when comparing staff groups, the rate ranged from 9.9% for health care assistants and other support staff to 2.1% for medical and dental staff
o gymharu grwpiau staff, roedd y gyfradd yn amrywio o 9.9% ar gyfer cynorthwywyr gofal iechyd a staff cymorth eraill i 2.1% ar gyfer staff meddygol a deintyddol