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  • Prevalence of attention-deficit hyperactivity disorder in children, adolescents and adults in the Middle East and North Africa region: a systematic review and meta-analysis

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Prevalence of attention-deficit hyperactivity disorder in children, adolescents and adults in the Middle East and North Africa region: a systematic review and meta-analysis
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  • Published on: 29 January 2024
    Limitations to consider in this systematic review

    Dear editor,
    I have read with great interest Al-Wardat et al.'s recent systematic review entitled “Prevalence of attention-deficit hyperactivity disorder in children, adolescents, and adults in the Middle East and North Africa region: a systematic review and meta-analysis." 1. Well-conducted systematic reviews of prevalence and incidence data are generally considered to provide the best evidence for health care planning and resource allocation 2 3.
    I have following concerns about methodology of the aforementioned systematic review:
    1- In systematic reviews of prevalence and incidence data, the inclusion of gray literature (through specialized databases such as ProQuest), ranging from clinical registries to government reports, census data, and national administrative datasets, is recommended 2. Furthermore, to improve the comprehensiveness of literature searches, additional significant databases, such as PsycINFO and CINAHL, and all related keywords (e.g., attention deficit disorder, ADD, attention-deficit/hyperactivity disorder, etc.), should be considered.
    2- The majority of nations in the Middle East and North Africa (MENA) region have official languages other than English, and many scholarly works originating from these regions are published in their respective native languages 4. Restricting inclusion criteria solely to studies in the English language may have inadvertently overlooked a significant portion of relevant literature (i.e....

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    Conflict of Interest:
    None declared.