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How Will DSM-5 Affect Autism Diagnosis? A Systematic Literature Review and Meta-analysis

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Abstract

We conducted a systematic review and meta-analysis to determine the effect of changes to the Diagnostic and Statistical Manual (DSM)-5 on autism spectrum disorder (ASD) and explore policy implications. We identified 418 studies; 14 met inclusion criteria. Studies consistently reported decreases in ASD diagnosis (range 7.3–68.4 %) using DSM-5 criteria. There were statistically significant pooled decreases in ASD [31 % (20–44), p = 0.006] and DSM-IV-TR subgroups of Autistic disorder [22 % (16–29), p < 0.001] and pervasive developmental disorder-not otherwise specified (PDD-NOS) [70 % (55–82), p = 0.01]; however, Asperger’s disorder pooled decrease was not significant [70 % (26–94), p = 0.38]. DSM-5 will likely decrease the number of individuals diagnosed with ASD, particularly the PDD-NOS subgroup. Research is needed on policies regarding services for individuals lacking diagnosis but requiring assistance.

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Acknowledgements

Elizabeth G. Cohn’s work on this project was supported by the Robert Wood Johnson Foundation Nurse Faculty Scholars Program.

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The authors declare they have no conflict of interest.

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This systematic literature review and meta-analysis did not involve any human subjects research.

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Correspondence to Kristine M. Kulage.

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Kulage, K.M., Smaldone, A.M. & Cohn, E.G. How Will DSM-5 Affect Autism Diagnosis? A Systematic Literature Review and Meta-analysis. J Autism Dev Disord 44, 1918–1932 (2014). https://doi.org/10.1007/s10803-014-2065-2

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