Abstract: Objective: To explore the interdimensional characteristics of intrinsic capacity in older adults through network analysis, and to identify the core dimensions, so as to provide a feasible basis for formulating intervention measures for the intrinsic capacity of older adults. Methods: This cross-sectional study used convenience sampling to select 1027 older individuals residing in communities in Beijing from August to November 2024. The general information questionnaire and the digital elderly integrated care assessment tool were used to collect data. The network of each dimension of intrinsic capacity was constructed and the centrality metrics were analyzed. Results: The score of intrinsic capacity of older adults in Beijing was 6.54±1.13. 36.3% of the older adults experienced decreased intrinsic capacity. The network analysis results showed that motor function, cognitive function, psychological function, sensory function (hearing), sensory function (vision), and vitality function were closely related to each other. Among them, the betweenness centralities of motor and cognitive functions were the same and the largest (rB=4.000), the closeness centralities of motor and cognitive functions were the same and the largest (rC=0.025), and the strength centrality of motor function was the largest (rS=0.715). Conclusion: The intrinsic capacity of the older adults in Beijing communities is at a medium level. Motor function is the most important dimension of the intrinsic capacity network, suggesting that medical staffs should pay attention to the motor function of older adults and formulate targeted intervention strategies to delay the decline of their intrinsic capacity.

Key words: community; aged; intrinsic capacity; network analysis