Document Detail

Prevalence of intellectual disability: a meta-analysis of population-based studies.
MedLine Citation:
PMID:  21236634     Owner:  NLM     Status:  MEDLINE    
Intellectual disability is an extremely stigmatizing condition and involves utilization of large public health resources, but most data about its burden is based on studies conducted in developed countries. The aim of this meta-analysis was to collate data from published literature and estimate the prevalence of intellectual disability across all such studies. The review includes studies published between 1980 and 2009, and includes data from populations that provided an overall estimate of the prevalence of intellectual disability. Meta-analysis was done using random effects to account for heterogeneity. Sub-group analyses were also done. The prevalence of intellectual disability across all 52 studies included in the meta-analysis was 10.37/1000 population. The estimates varied according to income group of the country of origin, the age-group of the study population, and study design. The highest rates were seen in countries from low- and middle income countries. Studies based on identification of cases by using psychological assessments or scales showed higher prevalence compared to those using standard diagnostic systems and disability instruments. Prevalence was higher among studies based on children/adolescents, compared to those on adults. Higher prevalence in low and middle income group countries is of concern given the limitations in available resources in such countries to manage intellectual disability. The importance of using standardized diagnostic systems to correctly estimate the burden is underlined. The public health and research implications of this meta-analysis have been discussed.
Pallab K Maulik; Maya N Mascarenhas; Colin D Mathers; Tarun Dua; Shekhar Saxena
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Publication Detail:
Type:  Journal Article; Meta-Analysis; Research Support, Non-U.S. Gov't; Review     Date:  2011-01-13
Journal Detail:
Title:  Research in developmental disabilities     Volume:  32     ISSN:  1873-3379     ISO Abbreviation:  Res Dev Disabil     Publication Date:    2011 Mar-Apr
Date Detail:
Created Date:  2011-02-15     Completed Date:  2011-06-14     Revised Date:  2013-02-08    
Medline Journal Info:
Nlm Unique ID:  8709782     Medline TA:  Res Dev Disabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  419-36     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
The George Institute for Global Health, Plot 839C, Road 44A, Jubilee Hills, Hyderabad 500033, India.
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MeSH Terms
Intellectual Disability / diagnosis*,  epidemiology*
World Health*
Erratum In:
Res Dev Disabil. 2013 Feb;34(2):729

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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