Cohort (n=8,988)
Yes
Longitudinal transitions into multisystem and respiratory multimorbidity clusters, as well as the accumulation of chronic diseases, significantly compound the 5-year mortality risk in middle-aged and older adults.
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Supports monitoring multimorbidity transitions for mortality risk stratification; leaves open causal effects and intervention targets in older adults.
BACKGROUND: We aimed to trace individual's transition between multimorbidity clusters and examine the addictive and compounding effects of transition trajectories, chronic disease accumulation, and five-year all-cause mortality. METHODS: Participants from the China Health and Retirement Longitudinal Study (2011-2020) were included (N = 8988). Latent class analyses, Cox proportional hazard models, and restricted cubic splines were used to examine the associations. RESULTS: Five clusters were identified: osteoarticular, cardiometabolic, multisystem, digestive, and respiratory. Participants who had multisystem multimorbidity and further developed respiratory diseases had mortality risk 9 times higher than the healthy participants (HR:9.04; 95% CI 3.44-23.73). For participants experienced prolonged cardiometabolic multimorbidity, the mortality risk increased by 26% with each additional chronic disease and by 38% with each additional body system affected between 2011 and 2015. CONCLUSION: Subsequent interventions should prioritize those who experienced prolonged multi-system multimorbidity, developed respiratory diseases from existing multi-system conditions, or developed additional chronic diseases from existing cardiometabolic multimorbidity.
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Ma et al. (2025) conducted a cohort in Chronic disease multimorbidity (n=8,988). Transition from multisystem multimorbidity to respiratory diseases vs. Healthy participants (no chronic diseases) was evaluated on Five-year all-cause mortality (HR 9.04, 95% CI 3.44-23.73, p=<0.001).
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