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. 2021 Feb 16;21:125. doi: 10.1186/s12877-021-02072-6

Fig. 4.

Fig. 4

Multivariable Cox proportional hazard models of five frailty components, adjusted by age, sex, NT-pro BNP level, and LVEF. Frailty was defined by Fried frailty phenotype, and event was defined as 6-month mortality or readmission. HR, Hazard ratio; CI, confidence interval