Sohel Nazmul, Tuokko Holly, Griffith Lauren, Raina Parminder
Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada.
Centre on Aging, University of Victoria, Victoria, British Columbia, Canada.
Age Ageing. 2016 Mar;45(2):280-6. doi: 10.1093/ageing/afv163. Epub 2015 Dec 12.
the objectives of this study were: (i) to estimate the rate of discrepancy between participant single-item self-reports of good memory and poor performance on a list-learning task and (ii) to identify the factors including age, gender and health status that influence these discrepant classifications.
in total, 14,172 individuals, aged 45-85, were selected from the 2008-09 Canadian Community Health Survey on Healthy Aging. We examined the individual characteristics of participants with and without discrepancies between memory self-reports and performance with a generalised linear model, adjusting for potential covariates.
the mean age of respondents was 62.9 years with 56.7% being female, 53.8% having post-secondary graduation and 83% being born in Canada. Higher discrepant classification rates we observed for younger people (6.77 versus 3.65 for lowest and highest group), female (5.90 versus 3.68) and with higher education (6.17 versus 3.52). Discrepant classification rates adjusted with all covariates were higher for those without chronic diseases (5.37 [95% Confidence Interval (CI): 4.16, 6.90] versus 4.05 95% CI: 3.38, 4.86; P = 0.0127), those who did not drink alcohol (5.87 95% CI: 4.69, 7.32 versus 3.70 95% CI: 3.00, 4.55; P < 0.0001), lonely participants (5.45 95% CI: 4.20, 7.04 versus 3.99 95% CI: 3.36, 4.77; P = 0.0081) and bilingual participants (5.67 95% CI: 4.18, 7.64 versus 3.83 95% CI: 3.27, 4.50; P = 0.0102).
the findings of this study suggest that the self-reported memory and memory performance differ in a substantial proportion of the population. Therefore, relying on a self-reported memory status may not accurately capture those experiencing memory difficulties.
本研究的目的是：（i）估计参与者在记忆单项自我报告良好但在列表学习任务中表现不佳之间的差异率；（ii）确定影响这些差异分类的因素，包括年龄、性别和健康状况。
总共从2008 - 09年加拿大健康老龄化社区健康调查中选取了14172名年龄在45 - 85岁之间的个体。我们使用广义线性模型检查了记忆自我报告与表现之间存在和不存在差异的参与者的个体特征，并对潜在的协变量进行了调整。
受访者的平均年龄为62.9岁，56.7%为女性，53.8%拥有大专学历，83%出生在加拿大。我们观察到年轻人（最低组和最高组分别为6.77对3.65）、女性（5.90对3.68）和受过高等教育者（6.17对3.52）的差异分类率更高。在调整了所有协变量后，无慢性病者（5.37 [95%置信区间（CI）：4.16，6.90]对4.05 95% CI：3.38，4.86；P = 0.0127）、不饮酒者（5.87 95% CI：4.69，7.32对3.70 95% CI：3.00，4.55；P < 0.0001）、孤独的参与者（5.45 95% CI：4.20，7.04对3.99 95% CI：3.36，4.77；P = 0.0081）和双语参与者（5.67 95% CI：4.18，7.64对3.83 95% CI：3.27，4.50；P = 0.0102）的差异分类率更高。
本研究结果表明，在相当一部分人群中，自我报告的记忆与记忆表现存在差异。因此，依靠自我报告的记忆状态可能无法准确捕捉到那些存在记忆困难的人。
