Table 1

Study sample characteristics

Characteristic	ADHD (n = 30)^*	Healthy controls (n = 35)^*	Statistical test	p value
Male/female, no.	19/11	19/16	χ²₁ = 0.545	0.461
Age, yr^†	31.40 ± 8.21	28.89 ± 7.77	U = 417.50	0.156
Education, yr^†	11.79 ±1.40	12.35 ± 1.15	U = 346.00	0.039
WAIS-IV vocabulary score	41.79 ± 9.45	44.03 ± 5.89	t_43,11 = −1.10	0.279
WAIS-IV matrix reasoning score^†	20.62 ± 2.80	20.66 ± 3.00	U = 488.00	0.791
FAIR-Q score^†	0.91 ± 0.08	0.94 ± 0.04	U = 371.00	0.092
WURS-K score^†	38.59 ± 10.56	11.18 ± 7.99	U = 25.50	< 0.001
ADHD-SR score^†	32.48 ± 8.80	5.12 ± 3.77	U = 1.50	< 0.001
BDI-II score^†	16.00 ± 9.94	2.40 ± 2.90	U = 76.50	< 0.001

ADHD = attention-deficit/hyperactivity disorder; ADHD-SR = ADHD Self Report Scale; BDI-II = Beck Depression Inventory II; FAIR-Q = Frankfurt Attention Inventory performance quality index; WAIS-IV = Wechsler Adult Intelligence Scale; WURS-K = Wender Utah Rating Scale, German short version.
↵* Unless otherwise indicated, data are mean ± standard deviation.
↵† Mann–Whitney–Wilcoxon test.