The prevalence of frailty differs significantly between the Frailty Phenotype (7.1%) and the Clinical Frailty Scale (21.8%) in community-dwelling older adults with hypertension, indicating that these two assessment tools identify non-overlapping populations and are not interchangeable in clinical guidelines.

One way of measuring frailty looks at weak muscles, slow walking, and low activity, which cause blood pressure to drop too much when standing, leading to falls. Another way looks at overall disability and chronic illnesses, which cause falls because of poor balance and movement problems, even when blood pressure is not low. These two methods pick out different groups of people because they measure different things happening in the body.