Registered: "average age at autism diagnosis" & "factors that influence average age at autism diagnosis (e.g., geographical location, socioeconomic status, gender identity, co-occurring mental health, year of publication)" www.crd.york.ac.uk/PROSPERO/vie... systematic review of studies from 2019-25
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Systematic review registry
Lauren Burton, Matthew Hollocks, Kate Tchanturia (2025). Age at autism diagnosis: a systematic review and meta-analysis from 2019-2025. CRD/PROSPERO. King's College London.
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