Our approach found approximately 6.4% of children (27,000) in GP registration data could not be found in state education records on 20 April 2021.
Canfuwyd nad oedd modd dod o hyd i tua 6.4% o’r plant (27,000) sydd yn y gyfres ddata cofrestriadau meddygon teulu mewn cofnodion addysg wladol ar 20 Ebrill 2021.