Comparison between self-reported and observed locomotion ability scores in patients with stroke: a cross-sectional study

This study aimed to investigate (i) the validity of self-reported scores of locomotion ability in stroke survivors using the ABILOCO-Benin questionnaire, and (ii) the congruence between online Rasch analysis of the ABILOCO-Benin raw scores and a conversion table set along with the questionnaire development. Thirty-five adult poststroke patients [mean age: 52 (SD: 10) years, 60% men] recruited from the rehabilitation department of National University Hospital of Cotonou (Benin), self-reported their locomotion ability, filling out the ABILOCO-Benin questionnaire [self-reported scores (SRS)]. Afterwards, a physical therapist observed and rated the patients' locomotion ability, while they performed each of the 15 items of the questionnaire [performance-based scores (PBS)]. Both raw SRS and PBS were then converted to linear measures using (i) an online Rasch analysis method and (ii) an ordinal-to-interval transformation table. Analyses showed high correlation (intraclass correlation coefficient=0.74, P

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