Even in cases where data relating to barriers were collected, they tended to be treated as supplementary topics rather than integrating them fully into the conceptualisation of disability.
Hyd yn oed mewn achosion lle casglwyd data am rwystrau, roedden nhw’n tueddu i gael eu trin fel pynciau ategol yn hytrach na chael eu hintegreiddio’n llawn i gysyniadu anabledd.