Dementia is a significant health issue because of its high prevalence and incidence, which is estimated to reach 20% in older population, but also because of its adverse consequences for both patients (e.g., disability, institutionalization) and the broader healthcare system (e.g., increased expenditures).
Predicting individuals at risk for dementia provides an opportunity to act on potent risk factors, with the aim of reducing its incidence rate. Slow walking speed and subjective cognitive impairment (SCI), defined as perceived changes in cognition in the absence of objective impairment, are two clinical characteristics which have been independently associated with an increased risk of dementia.
MCR has all the characteristics required for a clinical screening risk assessment for dementia in primary care populations. However, five years after its initial definition, MCR’s utility and its value in the prediction of dementia are still under question. For instance, a recent non-systematic review underscored the possibility of an MCR paradox, describing this syndrome as “a condition to treat or a mere matter for research purpose.” Data accumulated since initial definition appears to conflict with this assumption.