Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Operations Management Department, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Front Public Health. 2024 Sep 4;12:1401145. doi: 10.3389/fpubh.2024.1401145. eCollection 2024.
This study aimed to identify the dual trajectories of social participation (SP) and frailty index (FI) among Chinese older adults, and investigate common influential factors of both trajectories.
Utilizing data from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) 2008-2018 surveys, 1,645 individuals were analyzed. A group-based dual trajectory model and logistic regression were used to examine trajectories, their interrelations and shared influencing factors.
This study identified three SP, two FI trajectories and six distinct sub-groups of individuals. The study confirmed a long-term, interrelated relationship between two outcomes and identified some common factors. Compared to participants in the lower SP trajectory, those who followed the middle SP trajectory and higher SP trajectory had increased probabilities of belonging to the slow-growth FI trajectory (90.28 and 99.71%, respectively). And the participants in the slow-growth FI exhibited higher probabilities of belonging to the middle SP and the higher SP trajectory (37.64 and 25.34% higher, respectively) compared with those in the rapid-growth FI trajectory. Age, marital status, and drinking status were mutual factors associated with the dual trajectories.
The results showed significant associations between higher levels of frailty and lower levels of social participation. Related intervention policies should consider the dual trajectories and the common factors that underlie these trajectories of SP and FI.
本研究旨在识别中国老年人社会参与（SP）和衰弱指数（FI）的双重轨迹，并探讨两条轨迹的共同影响因素。
利用中国健康长寿纵向研究（CLHLS）2008-2018 年调查的数据，分析了 1645 名个体。采用基于群组的双重轨迹模型和逻辑回归来检验轨迹、它们之间的关系以及共同的影响因素。
本研究确定了三种 SP、两种 FI 轨迹和六个不同的个体亚组。研究证实了两种结果之间的长期相互关系，并确定了一些共同的因素。与处于较低 SP 轨迹的参与者相比，处于中间 SP 轨迹和较高 SP 轨迹的参与者属于缓慢增长 FI 轨迹的概率增加（分别为 90.28%和 99.71%）。与快速增长 FI 轨迹相比，处于缓慢增长 FI 的参与者属于中间 SP 和较高 SP 轨迹的概率更高（分别高 37.64%和 25.34%）。年龄、婚姻状况和饮酒状况是与双重轨迹相关的共同因素。
研究结果表明，较高的衰弱水平与较低的社会参与水平之间存在显著关联。相关干预政策应考虑 SP 和 FI 的双重轨迹以及构成这些轨迹的共同因素。
