Table 3 Psychometric properties mapped in this review.

Known-groups validity

Number and proportion of analyses per DMO and medical condition, which found a statistically significant difference

(1) between pathological and healthy gait, or (2) between disease severity strata

Convergent validity

Number and proportion of analyses per DMO and medical condition, which found a statistically significant, cross-sectional association between a DMO and validated measures of relevant constructs (e.g., disease severity, physical function, health-related quality of life, etc.)

Predictive validity

Number and proportion of analyses per DMO and medical condition, which found a statistically significant association between a DMO measured at baseline and a clinically relevant outcome at follow-up (i.e., mortality, physical function, healthcare utilization, etc.)

Responsiveness to intervention

Number and proportion of analyses per DMO and medical condition, which found a significant difference between experimental and control groups in an interventional study

Ecological validity

DMOs measured in clinical and real-world settings were mapped separately and trends were compared qualitatively