Title

Effects of LDX on Functioning of College Students With ADHD
Effects of Vyvanse on the Behavioral, Academic, and Psychosocial Functioning of College Students With ADHD
  • Phase

    Phase 4
  • Study Type

    Interventional
  • Intervention/Treatment

    lisdexamfetamine ...
  • Study Participants

    50
The purpose of this study was to evaluate the effects of lisdexamfetamine dimesylate, a prodrug stimulant, on the behavioral, academic, and psychosocial functioning of college students with attention-deficit/hyperactivity disorder (ADHD). Twenty-five college students with ADHD from two universities (University of Rhode Island and Lehigh University) completed a within-subject, placebo-controlled research trial. Dependent measures tapping behavioral, psychosocial, and academic functioning were completed on a weekly basis across five conditions (baseline, placebo, and 30-mg, 50-mg, and 70-mg lisdexamfetamine).
Objective: Evaluate stimulant medication on symptoms and functioning for college students with ADHD using double-blind, placebo-controlled, crossover design. Method: Participants included 24 college students with ADHD and 26 college students without psychopathology. Lisdexamfetamine dimesylate (LDX) examined for ADHD participants over five weekly phases (no-drug baseline, placebo, 30, 50, & 70-mg LDX per day). Self-report rating scales of functioning and direct assessment of ADHD symptoms, verbal learning/memory, and adverse side-effects were collected (baseline only for control students).
Study Started
Sep 30
2009
Primary Completion
Dec 31
2010
Study Completion
Dec 31
2010
Results Posted
Apr 08
2014
Estimate
Last Update
Apr 08
2014
Estimate

Drug lisdexamfetamine dimesylate

30-mg, 50-mg, 70-mg administered for one week in context of double-blind, placebo-controlled crossover design

  • Other names: Vyvanse, LDX

Drug Placebo

lisdexamfetamine dimesylate Experimental

All participants will be assessed across five conditions (baseline, placebo, 30-mg, 50-mg, & 70-mg) in a double-blind, crossover design

Criteria

Inclusion Criteria:

Diagnostic Statistical Manual of Mental Disorders 4th edition-text revision (DSM-IV-TR) criteria for ADHD based on self- and parent-report using questionnaires and clinical interview

Exclusion Criteria:

significant cardiac condition based on medical history and/or physical examination
significant substance abuse based on self-report and toxicology screen at intake
significant symptoms of major depressive disorder, bipolar disorder, or thought disorder based on initial diagnostic interview

Summary

Placebo

LDX 30-mg

LDX 50-mg

LDX 70-mg

All Events

Event Type Organ System Event Term Placebo LDX 30-mg LDX 50-mg LDX 70-mg

Conners Adult ADHD Rating Scale - Short Version (CAARS)

CAARS ADHD Index, adult self-report measure of ADHD symptoms. T-scores (mean = 50; standard deviation = 10) for all subscales on the short version were used as dependent measures with higher scores representing greater ADHD symptomatology (and ultimately a worse outcome in this study).

Placebo

50.59
T score (Mean)
Standard Deviation: 10.975

LDX 30-mg

46.86
T score (Mean)
Standard Deviation: 9.939

LDX 50-mg

47.32
T score (Mean)
Standard Deviation: 10.092

LDX 70-mg

45.36
T score (Mean)
Standard Deviation: 10.790

Behavior Rating Inventory of Executive Function - Adult (BRIEF-A)

BRIEF-A is a standardized self-report measure that captures adults' views of their own self-regulation in their everyday environment. Metacognition Index T-scores (mean = 50; standard deviation = 10) were used as dependent measures with higher scores representing greater deficit in planning/organizational skills critical for college success.

Placebo

65.91
T score (Mean)
Standard Deviation: 13.023

LDX 30-mg

59.23
T score (Mean)
Standard Deviation: 14.088

LDX 50-mg

57.64
T score (Mean)
Standard Deviation: 14.012

LDX 70-mg

54.91
T score (Mean)
Standard Deviation: 13.219

Total

50
Participants

Age, Continuous

20.17
years (Mean)
Standard Deviation: 1.2

BRIEF

54.86
T score (Mean)
Standard Deviation: NA

Conners Adult Rating Scale

47.08
T score (Mean)
Standard Deviation: NA

Age, Categorical

Father's level of education

Mother's level of education

Race/Ethnicity, Customized

Region of Enrollment

Sex: Female, Male

Year in College

Overall Study

Healthy Controls

Attention-deficit/Hyperactivity Disorder (ADHD) Participants

Drop/Withdrawal Reasons

Attention-deficit/Hyperactivity Disorder (ADHD) Participants