Biomaterial Database

Trends in the twinning rate in Enugu, Nigeria. 2008

H E Onah, and G O Ugwu

Department of Obstetrics and Gynaecology, University of Nigeria Teaching Hospital, Enugu, Nigeria. hyacinon@yahoo.com

Nigeria has the highest twinning rate in the world. Increasing twinning rates have been reported from various parts of the world as a result of assisted reproductive technologies. In order to determine whether Nigeria is part of this epidemic, the current study assessed the trends in twinning rates as seen at the University of Nigeria Teaching Hospital, Enugu, South-east Nigeria. It was a retrospective analysis of twin deliveries in the hospital over a 21-year period (1985-2005). No significant change was observed in the twinning rate within the study period. It was concluded that Nigeria is not yet part of the epidemic of multiple births affecting other parts of the world.

UI	MeSH Term	Description	Entries
D009549	Nigeria	A republic in western Africa, south of NIGER between BENIN and CAMEROON. Its capital is Abuja.	Federal Republic of Nigeria
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D011272	Pregnancy, Multiple	The condition of carrying two or more FETUSES simultaneously.	Multiple Pregnancy,Multiple Pregnancies,Pregnancies, Multiple
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D012189	Retrospective Studies	Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.	Retrospective Study,Studies, Retrospective,Study, Retrospective
D014427	Twins	Two individuals derived from two FETUSES that were fertilized at or about the same time, developed in the UTERUS simultaneously, and born to the same mother. Twins are either monozygotic (TWINS, MONOZYGOTIC) or dizygotic (TWINS, DIZYGOTIC).	Twin
D055815	Young Adult	A person between 19 and 24 years of age.	Adult, Young,Adults, Young,Young Adults