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. 2017 Sep 21;358:j4208. doi: 10.1136/bmj.j4208

Table 6.

Thresholds for classification of patients into one of four frailty groups

1 year risk of death* 1 year risk of unplanned hospital admission*
≥60.7% 34.1-60.6% 10.1-34.0% <10.1%
≥47.0% Severe frailty Severe frailty Severe frailty Severe frailty
20.3-46.9% Severe frailty Moderate frailty Moderate frailty Moderate frailty
2.9-20.2% Severe frailty Moderate frailty Mild frailty Mild frailty
<2.9% Severe frailty Moderate frailty Mild frailty Fit

Patients are classified according to the highest risk group. For example, a patient with a one year risk of death of 50% and a one year risk of unplanned admission of 8% would be classified in the severely frail group; a patient with a one year risk of death of 50% or a one year risk of unplanned admission of 62% would be classified in the severely frail group; and a patient with a 2% risk of death and a 5% risk of unplanned admission would be classified as “fit.”

*Risk thresholds correspond to highest 2%, 10%, and 50% absolute risks.