title: A fall in the rate of multiple births in Ibadan and Igbo Ora, Nigeria.
abstract: The twinning, triplet and quadruplet rates were found to be 23.8, 0.3 and 0.04 per thousand maternities, respectively in a survey of 71,773 maternities carried out in Ibadan and Igbo Ora, Nigeria. This represents a dramatic fall from the rates found in previous studies. The findings are discussed in the light of changing dietary habits.
mesh_terms: D004032:Diet; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009549:Nigeria; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011783:Quadruplets; D012959:Socioeconomic Factors; D014310:Triplets; D014427:Twins