Receiver operating characteristic curve analysis of the timed up and go test as a predictive tool for fall risk in persons with stroke: a retrospective study

Abstract

Persons with chronic stroke fall more often than healthy elderly individuals. The Timed Up and Go test (TUG) is used as a fall prediction tool, but only provides a result for the total measurement time. This study aimed to determine the optimal cut-off values for each of the 6 components of the TUG. Design: Retrospective study. Methods: Thirty persons with chronic stroke participated in the study. TUG evaluation was performed using a wearable miniaturized inertial sensor. Sensitivity, specificity, and predictive values were calculated using the Receiver Operating Characteristic (ROC) curve analysis for the measured values in each section. Optimal values for fall risk classification were determined. Logistic regression analysis was used to investigate the risk of future falls based on TUG. Results: The cut-off values of the 6 sections of the TUG were determined, as follows: sit-to-stand >2.00 seconds (p<0.05), forward gait >4.68 seconds (p<0.05), mid-turn >3.82 seconds (p<0.05), return gait >4.81 seconds (p<0.05), end-turn >2.95 seconds (p<0.05), and stand-to-sit >2.13 seconds (p<0.05). The risk of falling increased by 2.278 times when the mid-turn value was >3.82 seconds (p<0.05). Conclusions:The risk of falls increased by 2.28 times when the value of the mid-turn interval exceeded 3.82 seconds. Therefore, when interpreting TUG results, the predictive accuracy for falls will be higher when the measurement time for each section is analyzed, together with the total time for TUG.

Reliability of the infrared motion-time acquisition system for each motion segment in the timed up-and-go test

“…The timed up-and-go test (TUG) is a common method to predict falls 1,2) . While the total TUG time has been analyzed, the effect of each motion segment (sit-to-stand, forward gait, mid-turn, return gait, and turn-stand-to-sit) 3) on the risk of falling at different times has not been considered. Hence, the risk of falls may be incorrectly predicted if the timing of each TUG segment differs among people, but the total time remains the same 4) .…”

Overview of Physical Therapy for Children with Cerebral Palsy

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The Effects of Whole-body Vibration on the Gross Motor Function, Balance, and Gait of Children with Cerebral Palsy

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