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Table 3 The effects of age groups, gender, ADHD subtypes and methylphenidate (MPH) treatment on each index of TOVA

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

  Omission errors Commission errors Response time Response time variability Response sensitivity (d’) ADHD score
Age (<9 years vs. ≥9 years) −0.30 (0.764) 0.51 (0.610) 2.34 (0.020)* 2.51 (0.013)* 2.57 (0.011)* 2.77 (0.006)**
Gender (female vs. male) −0.18 (0.858) 0.91 (0.365) 0.44 (0.658) 0.96 (0.336) 0.50 (0.621) −0.10 (0.924)
ADHD subtypes a 0.17 (0.862) 1.19 (0.234) 0.79 (0.432) 1.50 (0.136) 1.62 (0.107) 2.21 (0.029)*
MPH treatment −0.14 (0.890) 2.02 (0.044)* 1.57 (0.119) 1.16 (0.247) 2.24 (0.026)* 1.42 (0.158)
Age × MPH treatment −0.16 (0.870) 0.58 (0.561) −2.72 (0.007)** −1.24 (0.218) −0.76 (0.446) −1.61 (0.110)
Gender × MPH treatment −2.30 (0.022)* −1.39 (0.166) 0.51 (0.611) −0.76 (0.447) −2.41 (0.017)* −0.04 (0.971)
ADHD subtypes × MPH treatment 0.91 (0.363) −0.14 (0.886) −0.33 (0.741) −0.07 (0.943) −0.01 (0.990) −0.99 (0.322)
  1. Note: Data are expressed as statistical values, t (p-value), using linear mixed model analysis; a ADHD subtypes: inattentive type vs. hyperactive-impulsive type and combined type; *p<0.05, **p<0.01.