This study identified differential patterns of later-life cognitive function trajectories and examined to what extent life course factors and social engagement are associated with group trajectories. Data came from seven waves of the Health and Retirement Study (HRS 1998–2010; n = 7374; Observations = 41,051). Latent class growth analysis identified cognitive function trajectory groups, and multinomial logistic regression was used to examine the factors associated with group trajectories. Five heterogeneous trajectories were identified: stable high, stable moderate, stable low, high-to-moderate, and moderate-to-low. Findings suggest that, after adjusting for life course factors, individuals who became volunteers were more likely to belong to one of the two least vulnerable trajectories, stable high or high-to-moderate. Our findings suggest that, despite the cumulative life course factors evident in cognitive decline, social engagement in old age may serve as a potential protective resource.
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机译：这项研究确定了晚年认知功能轨迹的不同模式，并研究了生活过程因素和社会参与程度与群体轨迹的关联程度。数据来自《健康与退休研究》的七次浪潮（HRS 1998–2010； n = 7374；观察值= 41,051）。潜在类增长分析确定了认知功能轨迹组，并使用多项逻辑回归分析了与组轨迹相关的因素。确定了五种不同的轨迹：稳定的高，稳定的中，稳定的低，高到中以及中到低。研究结果表明，在对生活过程因素进行调整之后，成为志愿者的人更有可能属于两个最不容易受到伤害的轨迹之一，即稳定的高或中等至中等。我们的研究结果表明，尽管累积的生命历程因素明显降低了认知能力，但老年人的社会参与仍可以作为潜在的保护资源。
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