Prevalence of developmental dyslexia in primary school children: a protocol for systematic review and meta-analysis.

World J Pediatr

Key Laboratory of Brain, Cognition and Education Sciences, Ministry of Education, 55 Zhongshan Avenue West, Tianhe District, Guangzhou, 510631, China.

Published: December 2022

AI Article Synopsis

  • Developmental dyslexia (DD) is a reading impairment that can have long-term effects, and accurate prevalence rates are essential for effective health resource planning and policy development.
  • The study aims to conduct a systematic review and meta-analysis of existing research to determine the global prevalence of DD, while also examining differences across gender and writing systems.
  • Comprehensive literature searches will be conducted across multiple databases, and the findings will be analyzed to identify factors influencing prevalence and to inform public health policies.

Article Abstract

Background: Developmental dyslexia (DD) is a specific impairment during the acquisition of reading skills and may have a lifelong negative impact on individuals. Reliable estimates of the prevalence of DD serve as the basis for evidence-based health resource allocation and policy making. However, the prevalence of DD in primary school children varies largely across studies. Moreover, it is unclear whether there are differences in prevalence in different genders and writing systems. Hence, the present study aims to conduct a systematic review and meta-analysis to assess the global prevalence of DD and to explore related factors.

Methods: We will undertake a comprehensive literature search in 14 databases, including EMBASE, PubMed, Web of Science, China National Knowledge Infrastructure and Cochrane, from their inception to June 2021. Cross-sectional and longitudinal studies that describe the prevalence of DD will be eligible. The quality of the included observational studies will be assessed using the Strengthening the Reporting of Observational Studies in Epidemiology statement. The risk of bias will be determined by sensitivity analysis to identify publication bias.

Results: One meta-analysis will be conducted to estimate the prevalence of DD in primary school children. Heterogeneity will be assessed in terms of the properties of subjects (e.g., gender, grade and writing system) and method of diagnosis in the included primary studies. Subgroup analyses will also be performed for population and secondary outcomes.

Conclusion: The results will synthesize the prevalence of DD and provide information for policy-makers and public health specialists.

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Source
http://dx.doi.org/10.1007/s12519-022-00572-yDOI Listing

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