Biomaterial Database

The age of menarche in Nigerian urban school girls. 1979

G O Uche, and A E Okorafor

In March and April 1978, a sample of 1365 girls from three secondary schools within and near Enugu (capital of Anambra State of Nigeria) were interviewed regarding date of birth and menstrual status. Using probit analysis, the mean age at menarche was 13.54 +/- 0.07 years, implying, when compared with earlier studies, a rate of decline in the average menarcheal age of about four months per decade. Significant differences were observed in the menarcheal ages of the girls with respect to their geographical residence and the occupation of their fathers. The results obtained in the study are similar to those reported by Oduntan et al. (1976) for south-western Nigeria, and they lend support to the proposition that improvements in nutrition and the elimination of infectious diseases (characteristic associated with socioeconomic development) tend to reduce the average menarcheal age.

UI	MeSH Term	Description	Entries
D008572	Menarche	The first MENSTRUAL CYCLE marked by the initiation of MENSTRUATION.
D009549	Nigeria	A republic in western Africa, south of NIGER between BENIN and CAMEROON. Its capital is Abuja.	Federal Republic of Nigeria
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D005006	Ethnicity	A group of people with a common cultural heritage that sets them apart from others in a variety of social relationships.	Ethnic Groups,Nationality,Ethnic Group,Nationalities
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
D000367	Age Factors	Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.	Age Reporting,Age Factor,Factor, Age,Factors, Age
D012959	Socioeconomic Factors	Social and economic factors that characterize the individual or group within the social structure.	Economic and Social Factors,Social Inequalities,Social Inequality,Social and Economic Factors,Socioeconomic Characteristics,Factors, Socioeconomic,High-Income Population,Land Tenure,Standard of Living,Characteristic, Socioeconomic,Factor, Socioeconomic,High Income Population,High-Income Populations,Inequality, Social,Living Standard,Living Standards,Population, High-Income,Socioeconomic Characteristic,Socioeconomic Factor,Tenure, Land
D044383	Black People	Persons having origins in any of the black racial groups of AFRICA. Note that OMB category BLACK OR AFRICAN AMERICAN is available for the United States population groups. Race and ethnicity terms, as used in the federal government, are self-identified social construct and may include terms outdated and offensive in MeSH to assist users who are interested in retrieving comprehensive search results for studies such as in longitudinal studies.	African Continental Ancestry Group,Black Person,Negroid Race,Black Peoples,Black Persons,Negroid Races,People, Black,Person, Black,Persons, Black,Race, Negroid