The samples of both waves of the survey were broadly representative of the population of Wales based on age, male and female, ethnicity, work status, and household income.
Roedd samplau dau gam yr arolwg yn gyffredinol gynrychiadol o boblogaeth Cymru yn seiliedig ar oedran, gwrywod a benywod, ethnigrwydd, statws gwaith, ac incwm aelwyd.