Outcome Measures for Clinical Trials in Down Syndrome.
Anna J Esbensen, Stephen R Hooper, Deborah Fidler and 10 others
PMID 28452584WHAT IT FOUND
Many outcome measures for Down syndrome trials are only promising, and no language measure is fully validated.
SLPs should not assume these scores detect change until Down syndrome-specific norms and testing are available.
Key findings
01No language measures have been completely validated for individuals with Down syndrome.
02Candidate measures should minimize expressive language demands unless expressive language is the target outcome.
03The PPVT-4, EVT-2, and SRS-2 are promising language measures but still need evaluation with individuals with Down syndrome.
STILL TO COME
How it was doneWhat they foundWhat it means for OTsWhat it means for SLPs
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What it does not show
The paper reports no patient outcomes and no treatment effects. The measure classifications rest on expert opinion, literature review, and input from a sponsored meeting. The tables are not available, so the full measure list cannot be checked. Many measures were judged from studies in other intellectual disabilities, not specifically in Down syndrome. Adaptive behavior scores may not compare fairly across countries because norms are mainly US-based. The paper is about clinical-trial outcome measures, so it does not tell a therapist which measure is best for individual care.
Declared interests
The supplied text reports an NIH-sponsored meeting and input from NIH, FDA, pharmaceutical companies, advocacy organizations, and a medical outcomes working group. It does not give an author conflict-of-interest declaration.
The easy way to misread this
Do not treat these measures as validated clinical tools for Down syndrome. The paper says no language measure is completely validated, and many promising measures still need Down syndrome-specific evaluation.