In the years prior to the pandemic, the number of examinations performed on children had been on an upward trend, increasing 18.2% between 2011-12 and 2019-20.
Yn y blynyddoedd cyn y pandemig, roedd nifer yr archwiliadau i blant wedi bod ar duedd ar i fyny, gan gynyddu 18.2% rhwng 2011-12 a 2019-20.