Comparison and Clinical Applications of the Frailty Phenotype and Frailty Index Approaches

The previous chapter focused on the conceptualization and operationalization of the deficit accumulation and phenotypic approaches to the description of frailty. The purpose of this chapter is to summarize some studies that compared these most commonly used frailty definitions. We also discuss the strengths and limitations of using these two frailty assessments in clinical settings and how they might be usefully employed in future studies.