Validation of Dodd's Model for Differential Diagnosis of childhood speech sound disorders: a longitudinal community cohort study

Developmental Medicine and Child Neurology
Kyriaki Ttofari EecenSheena Reilly

Abstract

Dodd's Model for Differential Diagnosis is one of the available clinical diagnostic classification systems of childhood speech sound disorders. Yet we do not understand the validity of this system beyond clinical samples, precluding its application in epidemiological or population-based research. This study aimed to determine the prevalence of subgroups of speech sound disorders in a community sample, relative to past clinical samples, in children speaking standard Australian English. We examined speech development in a community-ascertained sample of children at 4 years (n=1607). Inclusion for speech sound disorder was a score of less than or equal to 1 standard deviation on a standardized speech test, and/or research assistant concern, and/or three or more speech errors on sounds typically acquired by 4 years. Dodd's model was then applied to 126 children. Data revealed proportions of children across Dodd's diagnostic subgroups as follows: suspected atypical speech motor control (10%); inconsistent phonological disorder (15%); consistent atypical phonological disorder (20%); phonological delay (55%); and articulation disorder alone (0%). The findings are in line with known prevalence of these subgroups in clinical populations...Continue Reading

References

Jan 1, 1994·European Journal of Disorders of Communication : the Journal of the College of Speech and Language Therapists, London·A Bradford, B Dodd
Apr 1, 1997·Journal of Speech, Language, and Hearing Research : JSLHR·L D ShribergJ Kwiatkowski
Jul 27, 2000·International Journal of Language & Communication Disorders·B Dodd, A Bradford
Oct 1, 2005·International Journal of Language & Communication Disorders·Sharon CrosbieBarbara Dodd
Dec 28, 2005·Journal of Speech, Language, and Hearing Research : JSLHR·Lawrence D ShribergAlison R Scheer
Nov 14, 2006·Journal of Paediatrics and Child Health·Sheena ReillyObioha C Ukoumunne
Sep 14, 2010·Clinical Linguistics & Phonetics·Lawrence D ShribergDavid L Wilson
Jan 16, 2013·International Journal of Language & Communication Disorders·R Waring, R Knight
Jul 31, 2014·Journal of Speech, Language, and Hearing Research : JSLHR·Jennell C VickChristopher A Moore
Jun 8, 2017·Clinical Linguistics & Phonetics·Rebecca WaringBarbara Dodd
Oct 19, 2017·International Journal of Epidemiology·Sheena ReillyMelissa Wake

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Citations

Aug 29, 2018·Developmental Medicine and Child Neurology·Johanna Geytenbeek
Jan 22, 2022·International Journal of Language & Communication Disorders·Rebecca WaringPatricia Eadie

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