The survey questionnaire was informed by the theory of change for the ALN system outlined in the evaluation scoping report and findings are presented in relation to the following themes:
Cafodd holiadur yr arolwg ei lywio gan ddamcaniaeth newid ar gyfer y system ADY a amlinellir yn yr adroddiad cwmpasu a chyflwynir canfyddiadau mewn perthynas â'r themâu allweddol canlynol: