Betsi Cadwaladr had the highest proportion of RTT pathways waiting longer than one year in December, at 27.8% of pathways, whereas Swansea Bay had the lowest at 14.6% of pathways.
Betsi Cadwaladr oedd â’r gyfran uchaf o lwybrau RTT a oedd yn aros mwy na blwyddyn ym mis Rhagfyr (27.8% o lwybrau), a Bae Abertawe oedd â’r gyfran isaf (14.6% o lwybrau).