Joint association of cardiovascular health and frailty with all-cause and cause-specific mortality: a prospective study

Jul 23, 2024Age and ageing

Combined links of heart health and frailty with overall and specific causes of death

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Abstract

Over a median follow-up period of 87 months, 2036 deaths occurred among 21,062 participants evaluated for cardiovascular health and frailty.

Low cardiovascular health (CVH) is associated with an increased risk of all-cause mortality.
Frailty is independently linked to higher mortality rates from cardiovascular disease (CVD) and cancer.
The combination of low CVH and frailty significantly raises mortality risk, with hazard ratios indicating a strong negative association.
Stratified analyses suggest that the increased mortality risk from low CVH and frailty is particularly pronounced in younger individuals and females.

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BACKGROUND: Poor cardiovascular health (CVH) and physical frailty were reported to increase mortality risk, but their joint effects have not been fully elucidated.

OBJECTIVES: We aimed to explore the separate and joint effects of CVH and frailty on mortality based on two perspectives of Life's Essential 8 (LE8) and Framingham Risk Score (FRS).

METHODS: 21 062 participants in the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2018 were involved in this study. CVH was evaluated by the LE8 and FRS, and categorized into low, moderate and high CVH groups. Cox proportional hazard models were applied to estimate the separate and joint associations of CVH and frailty index (FI) with all-cause, cardiovascular disease (CVD) and cancer mortality.

RESULTS: Over a median follow-up period of 87 months (95% CI: 86.0-88.0), 2036 deaths occurred. The separate linear dose-response relationships between CVH, frailty and mortality were observed (nonlinear P > .05). The combination of low CVH/frailty was negatively associated with all-cause mortality [hazard ratio (HR) and 95%CI: low LE8FI, 5.30 (3.74, 7.52); high FRSFI, 4.34 (3.20, 5.88)], CVD mortality [low LE8FI, 6.57 (3.54, 12.22); high FRSFI, 7.29 (3.92, 13.55)] and cancer mortality [low LE8FI, 1.99 (1.14, 3.25); high FRSFI, 2.32 (1.30, 4.15)], with high CVH/fit group as reference. Further stratified analyses showed that the combined burden of mortality from frailty and low CVH was greater among the young and females.

CONCLUSIONS: Low CVH and frailty were independently and jointly correlated with greater risk of all-cause, CVD and cancer deaths, especially among the young and females.

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Joint association of cardiovascular health and frailty with all-cause and cause-specific mortality: a prospective study

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