Just over 8% of babies born to mothers aged 20 to 24 or 40 to 44 were of low birthweight, compared to just over 6% of babies born to mothers aged 16 to 19, 25 to 29 or 30 to 34.
Roedd gan ychydig dros 8% o fabanod a anwyd i famau 20 i 24 oed neu 40 i 44 oed bwysau geni isel, o’i gymharu ag ychydig dros 6% o fabanod a anwyd i famau 16 i 19, 25 i 29 neu 30 i 34 oed.