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Table 1 Age, gender and performance in TOVA for children with ADHD between subtypes at baseline

From: Long-term neurocognitive effects of methylphenidate in patients with attention deficit hyperactivity disorder, even at drug-free status

 

Inattentive type (n = 54)

Hyperactive-impulsive type (n = 5)

Combined type (n = 44)

Statistica

Age (years)

9.4 (1.9)

8.8 (1.5)

8.7 (2.0)

3.31 (0.192)

Gender (female/male), n (%)

14 (25.9)/40 (74.1)

0 (0)/5 (100)

7 (15.9)/37 (84.1)

2.19 (0.308)

Omission errors

−1.01 (1.52)

−1.89 (2.18)

−1.11 (1.52)

0.80 (0.672)

Commission errors

−0.06 (1.42)

−0.37 (1.41)

−0.41 (1.60)

4.68 (0.097)

Response time

−0.76 (1.25)

−0.43 (0.90)

−0.96 (1.61)

0.77 (0.682)

Response time variability

−0.87 (1.53)

−0.95 (0.76)

−1.31 (1.45)

1.90 (0.387)

Response sensitivity (d’)

−0.74 (0.93)

−1.02 (1.02)

−0.97 (0.81)

0.94 (0.626)

ADHD score

−1.49 (2.94)

−1.52 (2.27)

−3.32 (3.60)

3.77 (0.152)

  1. Note: TOVA results are reported as standard deviations from the norm; data are expressed as mean (SD) or n (%); a statistical values are expressed as χ 2 (p-value) using Kruskal Wallis Test or Fisher’s Exact Test.