Quantifying morbidity burdens and medical utilization of children with intellectual disabilities in Taiwan: a nationwide study using the ACG case-mix adjustment system.
Nationwide data show kids with ID bring five times the illness and cost—plan your behavior programs and budgets for heavy medical traffic.
01Research in Context
What this study did
The team pulled every Taiwan health-insurance claim for kids with intellectual disability. They used the ACG case-mix system to group each child by illness load.
The goal was to see how sick these kids are and how often they use doctors compared with typical peers.
What they found
Children with ID carried a heavier illness load and visited doctors about five times more often. Their medical bills were also roughly five times higher.
How this fits with other research
J-Rutherford et al. (2003) saw the same spike in adults with ID living in Taiwan institutions. They logged about 26 outpatient visits a year—double the national rate. The new study shows the gap starts in childhood, not just in facilities.
Sandberg et al. (2026) widened the lens to all ages and most body systems. Both papers agree: more illness overall. Yet Magnus found cancer rates oddly lower, probably because screening is missed. The Taiwan child data did not focus on cancer, so the two views slot together rather than clash.
Schroeder et al. (2014) and Kovačič et al. (2020) tracked adults once they reach the hospital. They found longer stays and frequent bounce-backs. Wui-Chiang’s child findings help explain why: heavy illness loads start early, feeding the adult pattern.
Why it matters
If you write care plans or budget programs, expect kids with ID to need about five times the medical touchpoints. Build extra time for medical appointments into behavior plans and caregiver training. Share the numbers with funders to justify transportation aides, longer session blocks, or telehealth slots. Spotting the load early lets you weave medical compliance goals into skill programs instead of treating crises later.
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02At a glance
03Original abstract
The purpose of this study was to quantify morbidity burdens of children with intellectual disability (ID) and to examine its association with total medical utilization and expenditure on a national basis in Taiwan. People under 18 years of age that had been continuously enrolled in the National Health Insurance (NHI) between year 2008 and 2010 were selected from one million randomly-sampled NHI beneficiaries. The Johns Hopkins Adjusted Clinical Group (ACG) System was applied to evaluate an individual's morbidity burden using 2008-2010 claims data, including age, sex, diagnosis, pharmacy, ambulatory, and inpatient utilization and expenditure (in New Taiwan Dollars, NTDs). The ID prevalence rate was 0.69% for people aged under 18. People with ID could be assigned to 20 mutually exclusive ACGs and to five simplified morbidity categories: healthy (0.1%), low (1.5%), moderate (31.9%), high (44.0%), and very high (22.4%). People with ID had more per capita visits (108.4 vs. 51.5, p<0.001), hospital admission (27.7% vs. 13.1%, p<0.001), pharmacy (NTD 21,069 vs. 4983, p<0.001) and total expenditure (NTD 144,962 vs. 29,764, p<0.001) than those without ID over 3 years. Those who assigned to the high-morbid categories cost more in ambulatory and inpatient services than those with low to moderate morbidities. In conclusion, the morbidity burdens of people with ID can be quantified by the ACG System based on readily available data. Regularly evaluating morbidity burdens and medical utilization has particular relevance for planning high-quality and efficient care. People's disabilities and comorbid illnesses shall be treated by integrated multidisciplinary teams.
Research in developmental disabilities, 2012 · doi:10.1016/j.ridd.2012.02.022