Cynhaliwyd yr adolygiad gan yr Uned Comisiynu Gydweithredol Genedlaethol, a gynhaliodd archwiliad manwl mewn perthynas â phob un o’r 169 o unigolion a oedd mewn unedau arbenigol ar adeg yr adolygiad. Archwiliwyd pob cofnod claf, gan gynnwys nodiadau clinigol a siartiau rhagnodi, a siaradodd tîm yr adolygiad â staff clinigol yn ogystal â’r cleifion hynny a oedd â’r gallu i gyfranogi ac a oedd yn dymuno gwneud hynny. Hefyd ymgynghorodd y tîm adolygu ag eiriolwyr, a phrosiect Pobl yn Gyntaf Cymru.
The review was undertaken by the National Collaborative Commissioning Unit (NCCU) and involved an in-depth audit of all 169 individuals in specialist units at the time of the review. Each patient record, including clinical notes and prescription charts, were audited and the review team spoke with clinical staff and those patients with the capacity and who wished to participate. In addition, the review team consulted with advocates and All-Wales People First.