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Prevalence, incidence, and stimulant use of attention-deficit hyperactivity disorder in Taiwan, 1996–2005: a national population-based study

Abstract

Purpose  

We used National Health Insurance (NHI) database to examine the prevalence, incidence, and stimulant use of attention-deficit
hyperactivity disorder (ADHD) diagnosis in Taiwan.

Methods  

The National Health Research Institute provided a database of 10,00,000 random subjects for study. A population-based random
sample of 372,642 patients aged younger than 18 was obtained as a dynamic cohort. Those study subjects who had at least one
service claim from 1996 to 2005, with a principal diagnosis of ADHD, were identified.

Results  

The cumulative prevalence of ADHD diagnosis increased from 0.06 to 1.64 % from 1996 to 2005. The annual incidence of ADHD
diagnosis increased from 0.02 to 0.34 % from 1997 to 2005. The highest incidence rates of ADHD diagnosis for both males and
females were in the 6- to 11-year age group. Higher incidence was detected in males (HR 3.76, 95 % CI 3.48–4.07), those who
lived in northern region (HR 1.35, 95 % CI 1.07–1.71) and urban area (HR 1.53, 95 % CI 1.40–1.66). The percentage of stimulant
use in children with ADHD diagnosis increased from 39.6 to 54.0 % from 1997 to 2005.

Conclusions  

Our findings suggest increases in the prevalence and incidence rates of ADHD diagnosis in Taiwan, which was in line with those
studies of Western countries. However, the prevalence of ADHD diagnosis in the NHI program was still much lower than in the
community studies. The percentage of stimulant use in children with ADHD diagnosis also has an increasing trend, which warrants
further study.

  • Content Type Journal Article
  • Category Original Paper
  • Pages 1-6
  • DOI 10.1007/s00127-012-0501-1
  • Authors
    • I-Chia Chien, Taoyuan Mental Hospital, Department of Health, No. 71, Longshow Street, Taoyuan City, 33058 Taoyuan County, Taiwan
    • Ching-Heng Lin, Taichung Veteran General Hospital, Taichung, Taiwan
    • Yiing-Jenq Chou, Department of Public Health, Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
    • Pesus Chou, Department of Public Health, Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
    • Journal Social Psychiatry and Psychiatric Epidemiology
    • Online ISSN 1433-9285
    • Print ISSN 0933-7954
Posted in: Journal Article Abstracts on 04/09/2012 | Link to this post on IFP |
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