Parental Education Predicts Longitudinal IQ Trajectories in 22q11.2 Deletion Syndrome: A Three-Cohort European Study.

J Intellect Disabil Res · 2025 · PMC12576363 · PMID 40759449

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highly significantno p-value reported

When we added the quadratic term, the linear contrast remained highly significant and negative for all IQ measures (FSIQ, PIQ and VIQ), confirming a steady decline over time, while the quadratic contrast was non‐significant in each model, indicating no detectable acceleration or deceleration in that decline.

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