Biomaterial Database

Mild mental retardation in schoolchildren in a Swedish suburban municipality: prevalence and diagnostic aspects. 1996

E Fernell

Department of Paediatrics, Huddinge University Hospital, Sweden.

The prevalence of mild mental retardation (MMR) (IQ 50-72) was investigated in a Swedish suburban municipality with special demographic characteristics. The study population consisted of the 6397 children aged 9-15 years residing in the municipality on December 31, 1994. A total of 82 children fulfilled psychometric and adaptive criteria of MMR, corresponding to a prevalence of 12.8/1000. The prevalence was higher than that reported in previous Swedish and Finnish studies using similar case-finding methods. This can probably be explained by the lower socioeconomic status in the municipality studied and by the fact that testing is now more acceptable. Nearly 90% of the MMR children had symptoms in their preschool years, mainly motor, speech/language deviations and a relative inability to perform certain tasks. These symptoms also occur in children with minimal brain dysfunction/ deficits in attention, motor control and perception which should be taken into consideration when selecting screening tests.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008607	Intellectual Disability	Subnormal intellectual functioning which originates during the developmental period. This has multiple potential etiologies, including genetic defects and perinatal insults. Intelligence quotient (IQ) scores are commonly used to determine whether an individual has an intellectual disability. IQ scores between 70 and 79 are in the borderline range. Scores below 67 are in the disabled range. (from Joynt, Clinical Neurology, 1992, Ch55, p28)	Disability, Intellectual,Idiocy,Mental Retardation,Retardation, Mental,Deficiency, Mental,Intellectual Development Disorder,Mental Deficiency,Mental Retardation, Psychosocial,Deficiencies, Mental,Development Disorder, Intellectual,Development Disorders, Intellectual,Disabilities, Intellectual,Disorder, Intellectual Development,Disorders, Intellectual Development,Intellectual Development Disorders,Intellectual Disabilities,Mental Deficiencies,Mental Retardations, Psychosocial,Psychosocial Mental Retardation,Psychosocial Mental Retardations,Retardation, Psychosocial Mental,Retardations, Psychosocial Mental
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
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
D012923	Social Class	A stratum of people with similar position and prestige; includes social stratification. Social class is measured by criteria such as education, occupation, and income.	Caste,Social Gradients,Socioeconomic Level,Socioeconomic Status,Middle Class Population,Castes,Class, Social,Gradient, Social,Level, Socioeconomic,Middle Class Populations,Population, Middle Class,Social Classes,Social Gradient,Socioeconomic Levels,Status, Socioeconomic
D013383	Suburban Population	The inhabitants of peripheral or adjacent areas of a city or town.	Suburban Residence,Nonmetropolitan Population,Suburbanization,Nonmetropolitan Populations,Population, Nonmetropolitan,Population, Suburban,Residence, Suburban,Suburban Populations,Suburban Residences
D013548	Sweden	Country in northern Europe, bordering the Baltic Sea, between Finland and Norway. The capital is Stockholm.
D015995	Prevalence	The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.	Period Prevalence,Point Prevalence,Period Prevalences,Point Prevalences,Prevalence, Period,Prevalence, Point,Prevalences