In terms of data, over time this policy change would result in fewer items being prescribed to some patients to treat certain conditions, but the volume of the item prescribed would increase.
O ran data, dros amser byddai'r newid polisi hwn yn golygu bod llai o eitemau'n cael eu rhagnodi i rai cleifion i drin cyflyrau penodol, ond byddai cyfaint yr eitem a ragnodir yn cynyddu.