Department of Psychology, The Pennsylvania State University, University Park, USA.
Department of Human Development and Family Studies, The Pennsylvania State University, University Park, USA.
J Gerontol B Psychol Sci Soc Sci. 2022 Apr 1;77(4):673-682. doi: 10.1093/geronb/gbab142.
There are positive correlations between subjective health reports and episodic memory performance in older adults. However, previous studies have not evaluated the scope of such complex relationships, nor the potentially nonlinear magnitude of these correlations across age and time. We employed multiple subjective heath indices to evaluate the scope and nonlinearity of such relationships with memory performance.
We utilized a cross-sectional (N = 2,783 at baseline) and longitudinal sample (N = 311) of healthy older adults aged 65 and older from the Advanced Cognitive Training for Independent and Vital Elderly study. We used time-varying effects modeling (TVEM) to assess potential differences in relationship magnitudes between memory and 3 subjective health subscales (general health, role physical function, and physical function, from the Short Form Health Survey) across 5 years.
Episodic memory positively predicted all subjective health measures cross-sectionally and longitudinally in our sample. TVEM revealed the relationships between all subjective health measures and episodic memory were stable across age. While role physical function and physical function maintained stable relationships with episodic memory across time, general health became increasingly coupled with memory 5 years following baseline.
Together, our findings highlight stable and varying relationships between episodic memory and multiple subjective health indicators across metrics of time in older adults. Clinical Trials Registration Number: NCT00298558.
在老年人中，主观健康报告与情景记忆表现之间存在正相关关系。然而，以前的研究尚未评估这种复杂关系的范围，也没有评估这些相关性在年龄和时间上的潜在非线性程度。我们使用多种主观健康指标来评估与记忆表现的关系的范围和非线性。
我们利用了来自高级认知训练独立和活力老年人研究的横断面（基线时 N = 2783）和纵向样本（N = 311），其中包括年龄在 65 岁及以上的健康老年人。我们使用时变效应模型（TVEM）来评估记忆和 3 个主观健康子量表（来自短格式健康调查的一般健康、角色身体功能和身体功能）之间的关系幅度在 5 年内的潜在差异。
在我们的样本中，情景记忆在横截面上和纵向均正向预测所有主观健康指标。TVEM 显示，所有主观健康指标与情景记忆之间的关系在年龄上是稳定的。虽然角色身体功能和身体功能与情景记忆的关系在整个时间内保持稳定，但在基线 5 年后，一般健康与记忆的关系越来越密切。
总的来说，我们的研究结果强调了情景记忆与老年人多种主观健康指标之间在时间上的稳定和变化关系。临床试验注册号：NCT00298558。
