The main methods employed were desk-based research (including reviews of data documentation, web-based resources, literature and quantitative analysis) and interviews with key stakeholders.
Y dulliau allweddol a ddefnyddiwyd oedd ymchwil ddesg (gan gynnwys adolygiadau o ddogfennaeth data, adnoddau ar y we, llenyddiaeth a dadansoddiad meintiol) a chyfweliadau â rhanddeiliaid allweddol.