Use of Direct In-Person Observation in the Care of Hospitalized Older Adults with Cognitive Impairment: A Systematic Review.

The review included only English-language peer-reviewed studies, so relevant quality-improvement reports or non-English work may be missing. Most included studies were small, single-site quality-improvement reports, not trials, so they cannot show that direct observation caused any outcome change. Definitions, indications, observer training, frequency, and duration of observation were often absent or inconsistent. Only a few patient outcome studies used validated pre-post measures, and many outcomes were staff perceptions rather than patient results. The review found little cost data and little patient or family perspective data. Because observation programs often included several components at once, the effect of any single component cannot be separated.

Do not read the reported reductions in falls or agitation as proof that direct observation works. They came from small quality-improvement projects with multiple components and weak measurement, so the study does not show which part of the care caused the change.