A parallel exercise to estimate children missing from education has been undertaken by ONS, the aim of which was to validate the ADR Wales estimate using other data sources.
Mae’r SYG wedi cynnal ymarfer cyfochrog i amcangyfrif plant sy’n colli addysg, a’r nod oedd dilysu amcangyfrif YDG Cymru gan ddefnyddio ffynonellau data eraill.