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Updated: Nov 10, 2025
Motor Dual-Tasks for Gait Analysis and Evaluation in Post-Stroke Patients
Published on: March 11, 2021
Externally validated model predicting gait independence after stroke showed fair performance and improved after
Anthonia J Langerak1, Alana B McCambridge2, Peter W Stubbs2
1University of Technology Sydney, Graduate School of Health, Discipline of Physiotherapy, Sydney, Australia; Utrecht University, University Medical Center Utrecht, Physical Therapy Sciences, program in Clinical Health Sciences, Utrecht, the Netherlands.
Objective:
To externally validate recent prognostic models that predict independent gait following stroke.
Study Design And Setting:
A systematic search identified recent models (<10 years) that predicted independent gait in adult stroke patients, using easily obtainable predictors. Predictors from the original models were assigned proxies when required, and model performance was evaluated in the validation cohort (n = 957). Models were updated to determine if performance could be improved.
Results:
Three prognostic models met our criteria, all with high Risk of Bias. Validation data was only available for the Australian model. This model used National Institute of Health Stroke Scale (NIHSS) and age to predict independent gait, using Motor Assessment Scale (MAS) walking item. For validation, Scandinavian Stroke Scale (SSS) was a proxy for NIHSS, and Functional Independence Measure (FIM) locomotion item was a proxy for MAS. The Area Under the Curve was 0.77 (0.74-0.80) and had good calibration in the validation dataset. Adjustment of the intercept and regression coefficients slightly improved discrimination. By adding paretic leg strength, the model further improved (AUC 0.82).
Conclusion:
External validation of the Australian model with proxies showed fair discrimination and good calibration. Updating the model by adding paretic leg strength further improved model performance.
