🇨🇦 Michael Porter 🇨🇦@nilsskirnir @GutterPoetry @Remittancegirl @murdoc @Profpatsch @DarkAthena @johnnyprofane1 @bmacDonald94 @actuallyautistic @actuallyadhd I imagine ADHD diagnosis has increased for similar reasons that ASD diagnoses did. Greater awareness and acceptance, transfer from other diagnoses.
e.g. This paper on the increase in autism diagnoses:
RESULTS. The average administrative prevalence of autism among children increased from 0.6 to 3.1 per 1000 from 1994 to 2003. By 2003, only 17 states had a special education prevalence of autism that was within the range of recent epidemiological estimates. During the same period, the prevalence of mental retardation and learning disabilities declined by 2.8 and 8.3 per 1000, respectively. Higher autism prevalence was significantly associated with corresponding declines in the prevalence of mental retardation and learning disabilities. The declining prevalence of mental retardation and learning disabilities from 1994 to 2003 represented a significant downward deflection in their preexisting trajectories of prevalence from 1984 to 1993. California was one of a handful of states that did not clearly follow this pattern.
CONCLUSIONS. Prevalence findings from special education data do not support the claim of an autism epidemic because the administrative prevalence figures for most states are well below epidemiological estimates. The growing administrative prevalence of autism from 1994 to 2003 was associated with corresponding declines in the usage of other diagnostic categories.
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