Abstract：
BACKGROUND:Childhood apraxia of speech (CAS) is a neurodevelopmental disorder with heterogeneous communication and other comorbid manifestations. While previous studies have characterized speech deficits associated with CAS, few studies have examined variability in reading and language and/or other developmental comorbidities. We sought to identify comorbid subgroups within CAS that could be clinically relevant as well as genetically distinctive. METHODS:In a group of 31 children with CAS and 8 controls, we performed hierarchical cluster analysis utilizing measures of articulation, vocabulary, and reading. We also conducted a chart review of the children with CAS to examine other clinical characteristics in these children and their association with subgroup membership. RESULTS:We identified 3 comorbid subgroups within CAS of varying severity. The high severity subgroup was characterized by poor reading and vocabulary, and the moderate severity subgroup by poor reading and non-word repetition but average vocabulary, compared to the mild severity subgroup. Subgroups were indistinguishable with respect to speech sound production, the hallmark of CAS, all demonstrating poor articulation. Children in the most severe subgroup were more likely to have early problems feeding (p = 0.036). CONCLUSIONS:Children with CAS may potentially be classified into comorbidity groups based on performance on vocabulary and reading measures, providing additional insight into the heterogeneity within CAS with implications for educational interventions.
journal_name
BMC Pediatrjournal_title
BMC pediatricsauthors
Stein CM,Benchek P,Miller G,Hall NB,Menon D,Freebairn L,Tag J,Vick J,Taylor HG,Lewis BA,Iyengar SKdoi
10.1186/s12887-020-02421-1subject
Has Abstractpub_date
2020-11-13 00:00:00pages
519issue
1issn
1471-2431pii
10.1186/s12887-020-02421-1journal_volume
20pub_type
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