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Minimal Detectable Change for TUG and TUDS Tests for Children With Down Syndrome
Kathy Martin1, Michael Natarus, Jeremy Martin
1Krannert School of Physical Therapy, University of Indianapolis, Indiana.
Purpose:
To determine test-retest reliability and minimal detectable change of the Timed Up and Go (TUG) and Timed Up and Down Stairs (TUDS) for Down syndrome.
Subjects:
Twelve children with Down syndrome (DS) aged 3 to 17 years.
Methods:
Two sessions, 1 week apart, with 3 trials of the TUG and 2 trials of the TUDS. Test-retest reliability was estimated using intraclass correlation coefficients and the standard error of measurement. The minimal detectable changes (MDCs) for both tests were calculated.
Results:
The TUG and TUDS tests both had high test-retest reliability. The MDC was 1.26 seconds for the TUG and 12.52 seconds for the TUDS test.
Conclusions:
Both tests were reliable in this population, but the MDC results suggest only the TUG is clinically useful.
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