Pitfalls of using IQ short forms in neurodevelopmental disorders: a study in patients with congenital heart disease.

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ID: 64962
2019
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Abstract
Short forms of IQ (S-IQ) assessments are time efficient and highly predictive of the full IQ (F-IQ) in healthy individuals. To investigate the validity of S-IQs for patients with neurodevelopmental impairments, this study tested a well-established S-IQ version in patients with congenital heart disease (CHD).The Wechsler Intelligence Scale for Children, Fourth Edition was applied in 107 children with complex CHD aged 9-11 years. F-IQ and a well-established S-IQ version were calculated for each patient. The agreement between S-IQ and F-IQ was investigated across the whole spectrum of IQ scores. Finally, we tested a method to adjust IQs to resolve potential bias and validated this method in an independent sample of 55 CHD patients.S-IQ and F-IQ correlated strongly. Nevertheless, the size of the bias correlated with the true IQ, indicating larger error at the tails of the distribution. Estimating a corrected IQ by adjusting the S-IQ with correction parameters substantially improved agreement.We here report that substantial bias may underestimate low IQ scores and overestimate high ones. This bias should be considered when at-risk populations are assessed with S-IQs. Importantly, the bias can be minimized by using a correction formula.
Reference Key
ehrler2019pitfallspediatric Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ehrler, Melanie;Latal, Beatrice;Polentarutti, Susanne;von Rhein, Michael;Held, Leonhard;Wehrle, Flavia M;
Journal Pediatric research
Year 2019
DOI
10.1038/s41390-019-0667-2
URL
Keywords
Children gut microbiota diet body composition principal component analysis compositional analysis

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