Survey respondents were asked to indicate to what extent they agreed or disagreed with a series of statements relating to their knowledge and understanding of the ALN system.
Gofynnwyd i'r ymatebwyr i'r arolwg nodi i ba raddau yr oeddent yn cytuno neu'n anghytuno â chyfres o ddatganiadau'n ymwneud â'u gwybodaeth a'u dealltwriaeth o'r system ADY.