A Meta-analysis of DSM-5 Autism Diagnoses in Relation to DSM-IV and DSM-IV-TR

This appears to be the first meta-analysis study which has incorporated articles on the percentage of people with a Diagnostic and Statistical Manual of Mental Disorders-Forth Edition (DSM-IV) autism spectrum disorder (ASD) diagnosis receiving a Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition (DSM-5) ASD diagnosis and articles on the percentage of people with a Diagnostic and Statistical Manual of Mental Disorders-Forth Edition-Text Revision (DSM-IV-TR) ASD diagnosis receiving a DSM-5 ASD diagnosis. Our meta-analysis measured the percentage of people with an ASD diagnosis from the DSM-IV or DSM-IVTR obtaining an ASD diagnosis from the DSM-5. All 24 studies identified indicated a reduction in the number of people with a DSM-IV or DSM-IV-TR ASD diagnosis being eligible for a DSM-5 ASD diagnosis, a 35 and 37 % reduction respectfully. Our meta-analysis also showed that those with a DSM-IV-TR or DSM-IV diagnosis of PDD-NOS were the least likely to qualify for a DSM-5 ASD diagnosis at 26 and 47 % followed by 55 and 19 %, respectfully of people with Asperger syndrome, and 80 and 87 %, respectfully of people with an autism diagnosis.