A Scoping Review of Disability Assessment in Prospective and Cross-Sectional Studies That Included Device-Based Measurement of Physical Activity.

While most studies asked something about one of the 3 domains, there was substantial diversity in the focus and style of questions. This diversity indicates a lack of consensus on how these concepts should be assessed, with implications for the comparability of evidence across studies and subsequent understanding of the relationships between disability, physical activity, and health.