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Development of a Behavioral Outcome Measure for Rett Syndrome (RettBe)

NCT03196323 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 146

Last updated 2020-12-09

No results posted yet for this study

Summary

The overall purpose of this study is to develop a broad-based (i.e., multiple domains) behavioral outcome measure for children between the ages of 3-18 years with Rett syndrome (RTT). The innovative approach of this proposal consists of integrating the process of developing a behavioral questionnaire to an ongoing large-scale data collection project. The Natural History Study of Rett Syndrome and Related Disorders (RTT5211) is a project that collects data on diverse aspects of the clinical evolution of individuals with RTT and related disorders. This project will serve as the basis for recruitment of subjects and it will also provide key demographic and clinical data for cohort characterization and for determining clinical relevance of the instrument (RettBe). An initial 100-subject cohort will allow for the testing with one rater of RettBe 1.0, a 50-item questionnaire formed from existing measures, a panel of clinicians and behavioral experts in RTT, and a focus group of parents and caregivers of children with RTT. Scores on RettBe 1.0 will be statistically analyzed to determine their psychometric properties, including its content validity. Items that do not meet psychometric standards (e.g., ceiling effect) will be eliminated.

Additional items will be added if the parental survey attached to RettBe 1.0 or clinician input suggests so. The resulting modified assessment, called RettBe 2.0, will be administered to a larger (validation) cohort of 300 participants. RettBe 2.0 will also be subjected to analysis of psychometric properties. RettBe 2.0 will also be administered to two raters per subject, in order to determine inter-rater reliability. In addition, these raters will be completing other behavioral and clinical measures for further evaluating the validity of RettBe 2.0 as well as for determining its clinical and functional significance. Finally, the investigators will obtain input from a panel of clinicians (site PIs and their designated clinicians) about content validity and clinical impact. The resulting version will be released as RettBe 3.0.

Conditions

Sponsors & Collaborators

  • National Institutes of Health (NIH)

    collaborator NIH

  • National Center for Advancing Translational Sciences (NCATS)

    collaborator NIH

  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

    collaborator NIH

  • National Institute of Neurological Disorders and Stroke (NINDS)

    collaborator NIH

  • University of South Florida

    lead OTHER

Eligibility

Min Age
3 Years
Max Age
18 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2017-06-01
Primary Completion
2020-09-24
Completion
2020-09-24

Countries

  • United States

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03196323 on ClinicalTrials.gov