Children with intellectual disability in rural South Africa: prevalence and associated disability.
In rural South Africa, 36 in 1,000 young children have ID, and epilepsy rides along in about 15% of them.
01Research in Context
What this study did
McIntyre et al. (2002) counted every child aged 2-9 in a rural South African district. They used door-to-door surveys and basic tests to find kids with intellectual disability. Doctors also checked for other conditions like epilepsy and cerebral palsy.
What they found
About 36 out of every 1,000 rural children had intellectual disability. Epilepsy showed up in 15 out of every 100 of these kids. Cerebral palsy appeared in 8 out of every 100. These two conditions were the most common extras.
How this fits with other research
Hatton et al. (2004) looked at many studies and saw the same pattern: people with ID carry higher rates of epilepsy and other health problems. The numbers match.
I-Takahashi et al. (2023) tracked Taiwan's national records and found ID rates rising over time, mostly from mild cases. This update shows prevalence can change when services and labels shift.
Arshad et al. (2011) found an opposite twist: adults with ID plus epilepsy had lower psychiatry rates than adults with ID alone. The gap is age-driven. Kids show more medical overlap; referred adults show different mental-health patterns.
Why it matters
You now have a rural African baseline: expect epilepsy in about 1 of every 7 kids with ID. Screen for seizures during intake. Pair this with Hatton et al. (2004) and plan extra health checks. Remember the Taiwan data if you later see rising caseloads—check if mild ID is being picked up earlier. Use the adult warning from Arshad et al. (2011) to avoid over-predicting mental-health risk in older clients who also have epilepsy.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Add a quick epilepsy-history question to your intake form for every child with ID.
02At a glance
03Original abstract
The objective of the present study was to determine the prevalence of intellectual disability (ID) and its associated disabilities in rural South African children aged 2-9 years. It was undertaken in eight villages in the district of Bushbuckridge, Northern Province, South Africa. A two-phase design was utilized. The first phase involved screening children on a house-to-house basis by interviewing mothers or caregivers using an internationally validated questionnaire for detecting childhood disability in developing countries. The second phase consisted of a paediatric/neurodevelopmental assessment of the children who screened positive. A total of 6692 children were screened; 722 (10.8%) had a paediatric evaluation and 238 children were diagnosed with ID, giving a minimum observed prevalence of 35.6 per 1000 children in this population. The prevalence of severe and mild ID was 0.64 per 1000 and 29.1 per 1000 children, respectively. The male:female ratio of children with ID was 3:2. In the affected children, a congenital aetiology for the ID was determined in 49 subjects (20.6%), an acquired aetiology in 15 (6.3%) and the aetiology was undetermined in 174 children (73.1%). Epilepsy (15.5%) and cerebral palsy (8.4%) were the commonest associated disabilities. The present study represents the first data on the prevalence of ID and associated disabilities in rural South African children. The prevalence of ID was comparable with results from a study performed in one other African country (Zambia) as well as those from other developing countries. The data provide an initial factual insight into ID and its associated disabilities for healthcare, social service and educational policy planners. This study provides a basis for the initiation and development of appropriate and integrated services for the best possible care of individuals affected with these disabilities, and for their possible prevention.
Journal of intellectual disability research : JIDR, 2002 · doi:10.1046/j.1365-2788.2002.00390.x