Fig. 4

Increase in mortality risk (hazard ratio) associated with each additional deficit in the Frail-VIG scale. A frailty status at baseline (i.e., one month before admission); the HR associated with a gain of one additional deficit at baseline was 1.10 (95% CI 1.05 – 1.15), p < 0.001. B frailty status on admission; the HR associated with a gain of one additional deficit at baseline was 1.16 (1.10 – 1.22), p < 0.001