Prevalence and clinical profile of frailty
The prevalence of frail patients varied between 27.5% with the Fried
scale and 11.0% with the CFS. Prefrail and robust patients were 48.6%
and 23.9% with the Fried scale and 73.4% and 15.6% with the CFS
respectively.
The concordance between both scales when classifying individuals as
“frail” or “non-frail”, assessed with the kappa index, was only
moderate (kappa index 0.52).
As the frailty status increased, there was a significative linear trend
towards being female and older age, worse functional status, lower
hemoglobin and worse quality of life.
Figure 2 summarizes, for the basal characteristics of the
patients, the presence or not of significative
linear trend among the three
ordinal levels of frailty.