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The forgotten learning disability: epidemiology of written-language disorder in a population-based birth cohort (1976-1982), Rochester, Minnesota
Abstract
OBJECTIVE. The aim of this study was to report the incidence rates and other epidemiologic characterizations of written-language disorder. There have been no epidemiologic studies on the incidence of written-language disorder in the United States, and the use of a population-based birth cohort, longitudinally followed, is the most powerful method for reaching this objective. METHODS. In this population-based, retrospective birth cohort study, subjects included 5718 children born between 1976 and 1982 in Rochester, Minnesota, who remained in the community after 5 years of age. Records from all public and nonpublic schools, medical facilities, and private tutorial services were reviewed and results of all individually administered IQ and achievement tests, and extensive medical, educational, and socioeconomic information, were collected. The essential features of writing problems from the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision were included in our operationalized definition of written-language disorder. Written-language disorder incident cases were established by using research criteria based on 3 formulas (regression-based discrepancy, nonregression-based discrepancy, and low achievement). RESULTS. Cumulative incidence rates of written-language disorder varied from 6.9% to 14.7% depending on the formula. Boys were 2 to 3 times more likely to be affected than girls regardless of the formula. Among all written-language disorder cases (N = 806), 25% (n = 203) had written-language disorder without a reading disability. Specifics of the writing problems were identified for 87% (n = 702) of written-language disorder cases. CONCLUSIONS. In this population-based birth cohort of school-aged children, written-language disorder was at least as frequent as reading disabilities and significantly more frequent among boys than girls.
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“A population-based birth cohort provides a powerful epidemiologic sample that can be used to define medical conditions and follow-up cases longitudinally.26–29”
From Long-Term Risk for Mood and Anxiety Disorders After Pediatric Traumatic Brain Injury: A Population-Based, Birth Cohort Analysis (2023) · cites this paper as [29]
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Differential Diagnosis of Dysgraphia, Dyslexia, and OWL LD: Behavioral and Neuroimaging Evidence
Berninger, V. W., Richards, T. L., & Abbott, R. D. (2015) · Reading and Writing · doi:10.1007/s11145-015-9565-0 · Cited by 176
Berninger, V. W., Nagy, W., Tanimoto, S., Thompson, R., & Abbott, R. D. (2015) · Computers & Education · doi:10.1016/j.compedu.2014.10.005 · Cited by 110
IQ in Autism Spectrum Disorder: A Population-Based Birth Cohort Study
Katusic, M. Z., Myers, S. M., Weaver, A. L., & Voigt, R. G. (2021) · Pediatrics · doi:10.1542/peds.2020-049899 · Cited by 54
Self-citationEsterov, D., Witkowski, J., McCall, D. M., Weaver, A. L., & Brown, A. W. (2023) · Journal of Head Trauma Rehabilitation · doi:10.1097/htr.0000000000000825 · Cited by 3
Self-citation
Metadata
- Authors
- Katusic, S. K., Colligan, R. C., Weaver, A. L., & Barbaresi, W. J.
- Affiliations
- Department of Health Sciences Research, Divisions of Epidemiology
- Department of Psychiatry and Psychology
- Biostatistics
- Division of Developmental and Behavioral Pediatrics, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota
- Venue
- Pediatrics
- Publisher
- American Academy of Pediatrics (AAP)
- Published
- 2009-05-01
- Volume
- 123
- Issue
- 5
- Pages
- 1306-1313
- ISSN
- 0031-4005
- 1098-4275
- Cited by
- 104
- References
- 2
- Language
- en
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