These measures assess balance and falls risk prediction at the body , structure and function level , falls risk and balance , and falls risk at the activity level .
The motor examination of the Unified Parkinson ’s Disease Rating Scale ( UPDRS-ME ) with robust psychometric analysis is a condition-specific measure with acceptable properties .
Conclusion : Six of the 68 outcome measures have strong psychometric properties for the assessment of balance and falls risk prediction in PD .
Objective : To investigate the psychometric properties of measures of balance and falls risk prediction in people with Parkinson ’s disease ( PD ) .
Comparison of Self-report and Performance-Based Balance Measures for Predicting Recurrent Falls in People With Parkinson Disease: Cohort Study
Background Balance confidence and fear of falling are factors associated with recurrent falls in people with Parkinson disease ( PD ) . However , the accuracy for predicting falls on the basis of self-report measures has not been widely investigated . Objective The study objectives were : ( 1 ) to compare the accuracy of the  Activities-specific Balance Confidence Scale ( ABC )  and the  Falls Efficacy Scale – International ( FES-I )  with that of the  Berg Balance Scale  ( BBS ) , Dynamic Gait Index  ( DGI ) , Functional Reach Test ( FRT ) , and Timed “ Up & Go ” Test ( TUG ) for predicting recurrent falls in people with PD and ( 2 ) to explore the ability of combinations of up to 3 tests to predict recurrent falls . Design This was a prospect i ve cohort study involving 225 people with PD . Methods Participants were assessed with the  ABC , FES-I , BBS , FRT , TUG , and DGI . Participants who reported 2 or more falls in the 12-month follow-up period were classified as recurrent fallers . Areas under the receiver operating characteristic curves were determined , and the Akaike information criterion was used to select the best predictive model . Results Eighty-four participants ( 37.3 % ) were classified as recurrent fallers . Areas under the receiver operating characteristic curves for the ABC , FES-I , TUG , FRT , DGI , and BBS were 0.73 , 0.74 , 0.72 , 0.74 , 0.76 , and 0.79 , respectively . Two-test models provided additional discriminating ability compared with individual measures and had Akaike information criterion values similar to those of 3-test models , particularly the combination of the BBS with the FES-I. Limitations The lack of an external validation sample was a limitation of this study . Conclusions The ABC and FES-I demonstrated moderate accuracy in predicting recurrent falls and a predictive ability similar to that of performance-based balance measures , especially the FRT and the TUG . Two-test models showed performance similar to that of 3-test models , suggesting that a combination of 2 measures may improve the ability to predict recurrent falls in people with PD . Specifically , the combination of the BBS with the FES-I may be considered
These measures assess balance and falls risk prediction at the body , structure and function level , falls risk and balance , and falls risk at the activity level .
The motor examination of the Unified Parkinson ’s Disease Rating Scale ( UPDRS-ME ) with robust psychometric analysis is a condition-specific measure with acceptable properties .
Conclusion : Six of the 68 outcome measures have strong psychometric properties for the assessment of balance and falls risk prediction in PD .
Objective : To investigate the psychometric properties of measures of balance and falls risk prediction in people with Parkinson ’s disease ( PD ) .