The impact of phenylalanine levels on cognitive outcomes in adults with phenylketonuria: Effects across tasks and developmental stages.

Neuropsychology · 2017 · PMC5331922 · PMID 28240926

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a trend approaching significanceno p-value reported

A few studies have found an impact of Phe fluctuations on IQ and executive functions in children (for IQ, see Anastasoaie, Kurzius, Forbes, & Waisbren, 2008 ; Burgard et al., 1996 ; Hood et al., 2014 ; Vilaseca et al., 2010 , for a trend approaching significance; for executive functions, see Arnold et al., 1998 ; Hood et al., 2014 ; but see and Viau et al., 2011 , for negative results).

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