Births can be recorded as singletons (one baby born); multiples (twins, triplets or more babies born) or stillbirths.
Gellir cofnodi genedigaethau fel genedigaeth unigol (pan gaiff un babi ei eni), genedigaethau lluosog (pan gaiff gefeilliaid, tripledi neu ragor o fabanod eu geni), a genedigaethau marw).