Table 4. Cox regression according to CFS*.

			CI (95%)
	HR	p Value	Lower	Upper
Frail vs. pre-frail/robust	1.39	0.014	1.07	1.81
Chronic heart disease	1.68	0.035	1.04	2.72
Chronic kidney disease	2.08	0.018	1.13	3.81
Hypertension	1.51	0.049	1.00	2.38
C—Harrell = 0.681

Note:

^*Sex, age, overcrowding, nosocomial infection, dependency, heart disease, COPD, asthma, kidney disease, neurological disorder, obesity, dementia, ICU admission, hypertension, mortality and frailty were the variables included in the multivariable model.