An Efficacy Study of Osmotic Release Oral System (OROS) Methylphenidate in Participants With Attention-Deficit/Hyperactivity Disorder (ADHD)
|ClinicalTrials.gov Identifier: NCT01060150|
Recruitment Status : Completed
First Posted : February 2, 2010
Results First Posted : July 31, 2013
Last Update Posted : August 23, 2013
|Condition or disease||Intervention/treatment||Phase|
|Attention Deficit Disorder With Hyperactivity||Drug: OROS Methylphenidate HCl||Phase 4|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||115 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Efficacy and Learning Skill After OROS Methylphenidate Treatment in Adolescents With Attention-Deficit/Hyperactivity Disorder: A 12-week, Multi-center, Open-label Study|
|Study Start Date :||July 2008|
|Actual Primary Completion Date :||April 2010|
|Actual Study Completion Date :||April 2010|
|Experimental: OROS Methylphenidate HCl||
Drug: OROS Methylphenidate HCl
Osmotic Release Oral System (OROS) Methylphenidate HCl tablet will be given orally once daily at a starting dose of 18 milligram (mg) for those less than 30 kilogram (kg) of body weight and 27 mg for those more than or equal to 30 kg; the dose can be increased by 9 mg or 18 mg per week up to Week 6 depending on a participant's treatment effect and tolerability; then a maximum maintenance dose of 72 mg will be given orally once daily up to Week 12.
Other Name: Concerta
- Korean Version of the Attention-Deficit/Hyperactivity Disorder (ADHD) Rating Scale (K-ARS) Score [ Time Frame: Week 12 ]The K-ARS is a rating scale that is used for the ADHD diagnosis and the assessment of treatment efficacy and comprises 18 items in total on the basis of Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV), each item being rated from 0-3 points. The total score ranges from 0-54 with 0=normal and 54=severe condition.
- Clinical Global Impression - Severity (CGI-S) Score [ Time Frame: Week 12 ]The CGI-S rating scale is a 7 point global assessment that measures the clinician's impression of the severity of illness exhibited by a participant. A rating of 1 is equivalent to "Normal, not at all ill" and a rating of 7 is equivalent to "Among the most extremely ill participants". Higher scores indicate worsening.
- Clinical Global Impression - Improvement (CGI-I) Score [ Time Frame: Week 12 ]The CGI-I is a 7-point scale that requires the clinician to assess how much the participant's illness has improved or worsened relative to a baseline state at the beginning of the intervention and rated as: 1=very much improved; 2=much improved; 3=minimally improved; 4=no change; 5=minimally worse; 6=much worse; 7=very much worse.
- Learning Skill Test (LST) Total Score [ Time Frame: Week 12 ]The LST measures learning ability of student. This scale is composed of 7 sections: self control, participation, task accomplishment, reading, writing, test taking and information processing. It consists of 70 items for middle school student (age 13-15 years) and 80 items for high school student (age 16-18 years). Each item is rated on a 5-point Likert scale ranging from 1 (never) to 5 (always). The total score range is 70-350 for middle school version and 80-400 for high school version where higher score indicates better ability for learning. In result analysis, each sub-score and total score was converted to T-score for normalization. The score range of T-score is from 1 to 100 with a mean of 50. Higher score indicates better ability for learning.
- Attention-Deficit/Hyperactivity Disorder (ADHD) Diagnostic System (ADS) Test Result for Omission Errors and Commission Errors [ Time Frame: Baseline and Week 12 ]The ADS is composed of 4 factors: omission/missing frequency to measure attention dispersibility; false alarm/commission frequency to measure impulse; mean response/reaction time to measure the speed of task processing; and the response variability/standard deviation of response time to measure the consistency of attention. The total value for both, omission errors and commission errors, ranges from 0-100 errors where high value indicates worsening attention.
- Attention-Deficit/Hyperactivity Disorder (ADHD) Diagnostic System (ADS) Test Score for Reaction Time and Response Variability [ Time Frame: Baseline and Week 12 ]The ADS is composed of 4 factors: omission/missing frequency to measure attention dispersibility; false alarm/comission frequency to measure impulse; mean response/reaction time to measure the speed of task processing; and the response variability/standard deviation of response time to measure the consistency of attention. The score range for both, reaction time and response variability, is 0-100. High score indicates worsening attention. If one or over factor's score is over 65 point, the participant is resulted in having attention deficit.
- Digit Span Test Score [ Time Frame: Baseline and Week 12 ]Each participant individually was given a sequence of numbers, with the sequence becoming progressively longer, to repeat the digits in the same sequence, either forwards or backwards. Each sequence length was attempted twice. The test was complete after failure on both trials of any sequence length. 1 point was awarded if the participant passed only 1 trial of a sequence length. 0 points were given if the participant failed both trials. Total score range was 0-16 (forwards) and 0-14 (backwards). A higher score was indicative of better recall and attention.
- Finger Window (FW) Test Score [ Time Frame: Baseline and Week 12 ]In FW test, a participant shows memory of a demonstrated visual pattern using a 8x11 inch plastic template containing 9 asymmetrically located holes. The examiner models a given sequence of holes and asks the participant to imitate the sequence by placing his/her finger through the same holes in the correct order. The total number of correct sequences constitutes the total score which ranges from 0-24 (forward FW) and 0-28 (backward FW) with higher score indicating a more favorable health state.
- Controlled Oral Words Association Test (COWAT) Score [ Time Frame: Baseline and Week 12 ]This test measures the executive function of the frontal lobe and is consisted of examinations of category/meaning fluency and letter/phoneme fluency. It consisted of three 60 second word generation trials in which the participant orally generates as many words as possible that begin with target letters F, A and S. Dependent variables included total number of acceptable words generated for each target letter and total number of words generated across all three letter trials. Total score was calculated as sum of acceptable words generated, with higher scores indicating better verbal fluency.
- Stroop Test Result for Reaction Time [ Time Frame: Baseline and Week 12 ]This test consists of 3 trials: color trial (simple execution), word trial (middle execution) and word-color interference trial (interfering execution). In simple execution, participants have to read the written color names of the words independent of the color of the ink. In middle execution, participants have to read words written in black letters. In interfering experiment, participants have to say the color of the letters independent of the written word. This test estimates spending time for execution. High spending time indicates low ability of suppression of automation.
- Stroop Test Result for False Reaction [ Time Frame: Baseline and Week 12 ]This test consists of 3 trials: color trial (simple execution), word trial (middle execution) and word-color interference trial (interfering execution). In simple execution, participants have to read the written color names of the words independent of the color of the ink. In middle execution, participants have to read words written in black letters. In interfering experiment, participants have to say the color of the letters independent of the written word. The total value ranges from 0-24 errors for each execution where high value indicates worsening attention.
- Stroop Test Score for Ratio Interference [ Time Frame: Baseline and Week 12 ]Ratio interference is calculated by dividing simple execution time by interfering execution time. The score range is 0-1. Higher value indicates better ability of suppression of automation.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01060150
|Study Director:||Janssen Korea, Ltd. Clinical Trial||Janssen Korea, Ltd.|