The percentage of records with valid data for epidurals is mixed across health boards and years, and in 2020, 83% of records had valid data at all Wales level.
Mae canran y cofnodion a chanddynt ddata dilys ynghylch defnyddio epidwral yn gymysg ar draws byrddau iechyd a blynyddoedd, ac yn 2020 roedd gan 83% o’r cofnodion ddata dilys ar lefel Cymru gyfan.