Cognitive Impairment, Sickle Cell Disease
Conditions
Keywords
sickle cell disease, pediatric, learning disability, cognitive impairment, memory, attention, Children with sickle cell disease
Brief summary
The majority of school-age children with sickle cell disease (SCD) experience neurocognitive deficits, even in the absence of stroke. In particular, deficits in attention and working memory have emerged as two of the most common neurocognitive sequelae of SCD. Thus, the goal of the present proposal is to address feasibility and compliance of a novel computerized cognitive training program, Cogmed. Pilot data will also be collected to establish preliminary efficacy. Twenty-four children meeting initial age and diagnostic criteria will be identified and approached about participation by their attending physician during regularly-scheduled SCD clinic visits. Baseline assessments will include a brief measure of intellectual functioning, a brief cognitive testing battery evaluating processing speed and working memory, in addition to questionnaires regarding behavior and quality of life. Children will then be randomized to the computerized CT program Cogmed (n=12) or a waitlist control (n=12). Participants enrolled in the computerized CT program will be asked to complete 25-sessions of Cogmed over a five to eight week period (3 to 5 sessions per week). Following completion of the program, children and their parents will be asked to return to clinic for a follow-up visit. After a five to eight-week waiting period, children in the waitlist condition will also be asked to return to clinic for a second visit. Following this assessment, participants initially enrolled in the waitlist will be offered an opportunity to participant in the intervention. If interested, they will follow the same intervention protocol described above. These children will return to clinic for a third visit following completion of the intervention. Compliance rate and its confidence interval will be calculated for the overall study population. A t-test for binomial proportion with continuity correction will be used to examine whether the compliance rate is lower than the target. Participants' change in criterion outcomes will be evaluated (i.e., those neurocognitive measures such as attention, executive functioning and working memory, that are most closely related to the trained tasks).
Interventions
BEHAVIORALCogmed
Computer based program that aims to improve children's memory, attention, and processing speed.
Sponsors
Duke University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
8 Years to 16 Years
Healthy volunteers
No
Inclusion criteria
* 1\) Children with a diagnosis of SCD (all genotypes) * 2\) a T-score ≥75th percentile on either the Metacognition or Executive Composite of the BRIEF; and/or * 3\) a standard score ≥1 standard deviation below the mean (\<90) on the tasks of executive function or WM from the Cogstate (mean=100; SD=10)
Exclusion criteria
* 1\) Estimated IQ ≤ 75), or motor, visual, or auditory handicap that prevents computer use; * 2\) a diagnosis of depression or a pervasive developmental disorder (by history); * 3\) clinical stroke (via record medical history); or * 4\) non-English fluency.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Feasibility | Post-study - Baseline to Post-Intervention, approximately 5 to 8-weeks after baseline assessment | Feasibility is defined as 75% of subjects completing 80% of the training program. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Efficacy | Baseline to Post-Intervention, approximately 5 to 8-weeks after baseline assessment | Efficacy will be defined by participant performance on cognitive outcome measures including executive functioning outcomes from the Cogstate. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Acceptance | After the recruitment period has been completed (approximately 2-years) | Acceptance is defined by 50% of those approached are able to participate/consent to the study. |
Countries
United States
Outcome results
None listed