Trajectories of impairment, social support, and depressive symptoms in later life.
Trajectories of impairment, social support, and depressive symptoms in later life.
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DOI：
10.1093/geronb/59.4.s238
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发表时间：
2004-07
期刊：
影响因子：
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通讯作者：
Miles G. Taylor;S. Lynch
中科院分区：
文献类型：
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作者：
Miles G. Taylor;S. Lynch
目的研究残疾和抑郁症状在晚年的动态性质。然而，很少有研究将残疾和抑郁症状建模为动态的、相关的过程。此外，几乎没有一项研究认为社会支持会随着年龄的增长而变化。在这里，我们调查了残疾的长期模式，感知和接受的社会支持，以及晚年抑郁症状之间的关系。方法我们使用四波Duke建立的老年流行病学研究人群的随机系数(增长)模型来确定残疾、支持和抑郁症状是否遵循随年龄的线性轨迹，以及支持是否在残疾和抑郁症状之间的关系中起中介作用。结果(1)残疾轨迹与抑郁症状轨迹显著相关；(2)领悟支持轨迹在残疾轨迹与抑郁症状之间起中介作用，而获得支持轨迹不起中介作用。讨论残疾、社会支持和抑郁症状是晚年生活中密切相关的过程。我们的结果与之前的研究一致，表明感知的支持而不是获得的支持在残疾和抑郁症状之间的关系中起中介作用，但我们的结果扩展了之前的研究，表明这种中介作用是随着时间的推移而发生的。
OBJECTIVE Research has increasingly focused on the dynamic nature of disability and depressive symptoms in later life. Little research, however, has modeled disability and depressive symptoms as dynamic, related processes. Furthermore, virtually no research has considered social support as dynamic across age. Here, we investigate the relationship between long-term patterns of disability, perceived and received social support, and depressive symptoms in later life. METHODS We use random coefficient (growth) models of four waves of Duke Established Populations for Epidemiologic Studies of the Elderly data to determine whether disability, support, and depressive symptoms follow linear trajectories across age and whether support mediates the relationship between disability and depressive symptoms. RESULT The results show that (a) trajectories of disability are strongly related to trajectories of depressive symptoms and (b) trajectories of perceived support mediate the relationship between trajectories of disability and depressive symptoms, whereas trajectories of received support do not. DISCUSSION Disability, social support, and depressive symptoms are strongly interrelated processes in later life. Our results are consistent with previous research in showing that perceived, rather than received, support mediates the relationship between disability and depressive symptoms, but our results extend previous research in showing that this mediation occurs across time.