BMC Neurology

Table 3 Pearson correlation coefficient between the scores of ADHDT, hyperactivity, impulsivity, inattention, WISC-R and biochemical parameters

From: Serum levels of glucose, thyroid stimulating hormone, and free thyroxine in boys diagnosed with attention deficit hyperactivity disorder: a cross-sectional pilot study

	ADHD T		Hyperactivity		Impulsivity		Inattention		REVISK
	ADHD T		Hyperactivity		Impulsivity		Inattention		IQ verbal		IQ non verbal		IQ total
	r	p	r	p	r	p	r	p	r	p	r	p	r	p
Glu (mmol/l)	0.025	0.841	0.312	0.01^**	0.225	0.068	-0.089	0.472	0.13	0.293	0.066	0.593	0.128	0.302
TSH (µIU/ml)	0.075	0.548	0.318	0.009^**	0.275	0.024^*	-0.14	0.258	0.004	0.973	-0.13	0.293	-0.068	0.588
FT4 (pmol/l)	-0.014	0.909	-0.141	0.254	-0.151	0.224	-0.142	0.252	-0.096	0.441	-0.125	0.313	-0.1	0.422

ADHD, attention deficit hyperactivity disorder; ADHT-T, attention deficit hyperactivity disorder test, FT4, free thyroxine; IQ, intelligence quotient; TSH, thyroid stimulating hormone; WISC-R, Wechsler Intelligence Scale for Children – Revised

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