Biomaterial Database

Mental subnormality in Northern Ireland. 1978

G McDonald, and D N MacKay

A prevalence survey of mental subnormality in Northern Ireland was carried out on lines similar to an earlier investigation by MacKay (1971). In a general population of one and a half million there were 6,854 ascertained subnormal individuals. The male : female ratio was 1. 14 :1. Approximately one in three subnormal people was under residential care. The prevalence of severe subnormality (IQ less than 50) in the 15-19 year old group was 4.81. The findings do not support the "steady rate" theory of severe subnormality.

UI	MeSH Term	Description	Entries
D007223	Infant	A child between 1 and 23 months of age.	Infants
D007360	Intelligence	The ability to learn and to deal with new situations and to deal effectively with tasks involving abstractions.
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
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009660	Northern Ireland	The northern one-sixth of the island of Ireland - between the North Atlantic Ocean and the North Sea; northwest of France. The capital is Belfast.
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D003156	Community Mental Health Services	Diagnostic, therapeutic and preventive mental health services provided for individuals in the community.	Community Mental Health Service,Mental Health Services, Community,Assertive Community Treatment,Health Services, Community Mental,Services, Community Mental Health,Services, Mental Health Community,Community Treatment, Assertive,Treatment, Assertive Community
D005260	Female		Females