Table 2 Univariate regressions for Qb scores.

From: Clinical response to a single-dose methylphenidate challenge is indicative of treatment response at two months in adults with ADHD

 

Improvement QbAct at follow up

Improvement QbImp at follow-up

Improvement QbIna at follow-up

Acute response

Equation

F (p-value), R2

Equation

F (p-value), R2

Equation

F (p-value), R2

QbAct_acute response

Improvement (fu) = 1.037 + 0.350QbAct_acute response

8.195 (0.006), 0.124

Improvement (fu) = 0.636 + 0.059QbAct_acute response

0.267 (0.608), 0.005

Improvement (fu) = 0.445 + 0.143QbAct_acute response

1.596 (0.212), 0.027

QbImp_acute_response

Improvement (fu) = 1.183 + 0.227QbImp_acute_response

3.322 (0.074), 0.054

Improvement (fu) = 0.608 + 0.457QbImp_acute_response

23.584 (<0.001), 0.289

Improvement (fu) = 0.507 + 0.077QbImp_acute_response

0.474 (0.494), 0.008

QbIna_acute_response

Improvement (fu) = 1.097 + 0.233QbIna_acute_response

3.128 (0.082), 0.051

Improvement (fu) = 0.635 + 0.062QbIna_acute_response

0.277 (0.601), 0.005

Improvement (fu) = 0.277 + 0.490QbIna_acute_response

23.786 (<0.001), 0.291

  1. Linear regressions showed that changes in the three Qb scores under a single dose of MPH were significantly associated with improvement in corresponding scores after two-month treatment (follow-up). All survived correction for multiple comparisons. Score improvement at follow-up can be calculated according to the formula Y = α + βX, where α and β are the constant and regression coefficient, and X the acute change of interest. Statistically significant results are displayed in bold.
  2. Act activity, Imp impulsivity, Ina inattention, fu follow-up, Qb Quantitative behavior test.
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