Transitions between frailty status
Changes in frailty scores are also reflected in transitions between the frailty groups between the preoperative level and the one after surgery. These changes, along with the postoperative mortality in each frailty group are shown in Table 2 .
Although Frail patients had the highest postoperative mortality, up to 50% of them improved their frailty status 6 months after surgery when frailty is assessed with the Fried scale. With the CFS, 39% of frail patients switched to a less frail group. Most robust patients maintained their status after surgery.
Table 2. Transitions between frailty status (values are expressed as percentages).