Table 1.

Patient inclusion and exclusion criteria relating to previous exposure to ADHD medication

Inclusion criteria

1. An inadequate response to previous MPH treatment. This included, but was not limited to, one or more of the following:

• The presence of some residual ADHD symptoms

• Inadequate duration of action

• Variable symptom control

• If, based on the investigator’s judgement, the patient may benefit clinically from an alternative to MPH

Exclusion criteria

1. Intolerable adverse events from previous MPH treatment

2. Previous exposure to amfetamine or ATX

3. Previous treatment with more than one MPH medication

• This did not include patients who had received immediate release MPH for dose titration on a short-term basis (≤4 weeks) provided that they experienced an adequate response

4. Failure to respond to more than one previous course of MPH medication

• Failure to respond was defined as a worsening, no change or minimal improvement of symptoms

5. Good control of ADHD symptoms with acceptable tolerability on current ADHD medication

ADHD attention-deficit/hyperactivity disorder, ATX atomoxetine, MPH methylphenidate