Table 4.

Univariate and multivariable Cox regression proportion hazard model

	Univariate model			Multivariable model
	HR	95% CI	p-value	aHR	95% CI	p-value
No frailty	Reference	–	–	Reference	–	–
CFS 4–6	3.39	1.88–6.11	< 0.001	3.35	1.85–6.05	< 0.001
CFS > 6	4.49	2.31–8.74	< 0.001	4.54	2.33–8.86	< 0.001

aHR adjusted hazard ratio, CFS clinical frailty scale, CI confidence interval, HR hazard ratio