Prevalence, co-occurring difficulties, and risk factors of developmental language disorder: first evidence for Mandarin-speaking children in a population-based study

Developmental language disorder (DLD) is a condition that significantly affects children's achievement but has been understudied. We aim to estimate the prevalence of DLD in Shanghai, compare the co-occurrence of difficulties between children with DLD and those with typical development (TD), an...

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Published in:The Lancet regional health. Western Pacific 2023-05, Vol.34, p.100713-100713, Article 100713
Main Authors: Wu, Saishuang, Zhao, Jin, de Villiers, Jill, Liu, Xueman Lucy, Rolfhus, Eric, Sun, Xiaoning, Li, Xinyue, Pan, Hao, Wang, Haiwa, Zhu, Qi, Dong, Yuanyuan, Zhang, Yunting, Jiang, Fan
Format: Article
Language:English
Subjects:
Co-occurring difficulties
Developmental language disorder
Mandarin
Prevalence
Risk factors
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Summary:Developmental language disorder (DLD) is a condition that significantly affects children's achievement but has been understudied. We aim to estimate the prevalence of DLD in Shanghai, compare the co-occurrence of difficulties between children with DLD and those with typical development (TD), and investigate the early risk factors for DLD. We estimated DLD prevalence using data from a population-based survey with a cluster random sampling design in Shanghai, China. A subsample of children (aged 5–6 years) received an onsite evaluation, and each child was categorized as TD or DLD. The proportions of children with socio-emotional behavior (SEB) difficulties, low non-verbal IQ (NVIQ), and poor school readiness were calculated among children with TD and DLD. We used multiple imputation to address the missing values of risk factors. Univariate and multivariate regression models adjusted with sampling weights were used to estimate the correlation of each risk factor with DLD. Of 1082 children who were approached for the onsite evaluation, 974 (90.0%) completed the language ability assessments, of whom 74 met the criteria for DLD, resulting in a prevalence of 8.5% (95% CI 6.3–11.5) when adjusted with sampling weights. Compared with TD children, children with DLD had higher rates of concurrent difficulties, including SEB (total difficulties score at-risk: 156 [17.3%] of 900 TD vs. 28 [37.8%] of 74 DLD, p 
ISSN:2666-6065
2666-6065
DOI:10.1016/j.lanwpc.2023.100713