National indicator data for children aged 10 to 15, collected prior to the pandemic, shows there has been little change in the mean strength and difficulties questionnaire score.
Mae data dangosyddion cenedlaethol ar gyfer plant rhwng 10 a 15 oed, a gasglwyd cyn y pandemig, yn dangos mai ychydig o newid sydd wedi bod yn sgôr gymedrig yr holiadur cryfder ac anawsterau.