For the period 1 April 2020 to 31 March 2021, 54 NHS mental health facilities and 20 Independent hospitals provided returns.
Cafodd cyfanswm o 1,472 o ddeintyddion a oedd â gweithgarwch GIG eu cofnodi rhwng 1 Ebrill 2019 a 31 Mawrth 2020.