Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology Research Institute, Obu City, Japan.
Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology Research Institute, Obu City, Japan.
Arch Gerontol Geriatr. 2021 Nov-Dec;97:104488. doi: 10.1016/j.archger.2021.104488. Epub 2021 Jul 18.
This study aimed to examine the prospective association between computer use and cognitive decline among community-dwelling Japanese older adults, considering the characteristics of computer users.
This four-year prospective cohort study was conducted in Obu, Japan. Participants who were cognitive intact at Wave 1 (2011-2012) were followed through the study period. Cognitive decline was defined as scoring below the standard threshold in at least one of four neuropsychological tests at Wave 2 (2015-2016). The association between computer use at Wave 1 and cognitive decline was examined using logistic regression for complete samples (n = 2010, 52.5% female, mean 71.0 ± 4.7 years) and imputed samples (n = 3435, 51.8% female, mean 71.5 ± 5.3 years).
The computer use group had a reduced adjusted odds ratio (aOR) of cognitive decline, after adjustment for covariates, in both the complete and imputed samples (complete samples: aOR 0.71, 95% confidence interval [CI] 0.52-0.97, p = 0.030; imputed samples: aOR 0.67, 95% CI 0.51-0.88, p < 0.003). Stratified analysis of both samples showed that computer users with ≥ 10 years' education, a GDS score of < 6, or a walking speed of ≥ 1.0m/s, showed reduced aOR for cognitive decline (aOR 0.61 to 0.69, p < 0.05). Those with < 10 years of education years, GDS scores ≥ 6 of GDS, or walking speed < 1.0m/s did not show significant association.
Computer use is longitudinally associated with protected cognitive function, based on computer user characteristics.
本研究旨在探讨考虑到电脑使用者的特点，日本社区居住的老年人中电脑使用与认知能力下降之间的前瞻性关联。
本四年前瞻性队列研究在日本的大府市进行。在第 1 波（2011-2012 年）认知正常的参与者在研究期间进行了随访。认知能力下降定义为在第 2 波（2015-2016 年）的四项神经心理学测试中至少有一项得分低于标准阈值。使用逻辑回归分析完整样本（n=2010，52.5%为女性，平均年龄 71.0±4.7 岁）和插补样本（n=3435，51.8%为女性，平均年龄 71.5±5.3 岁）中第 1 波电脑使用与认知能力下降之间的关联。
在调整了协变量后，电脑使用组在完整样本和插补样本中认知能力下降的调整后比值比（aOR）均降低（完整样本：aOR 0.71，95%置信区间 [CI] 0.52-0.97，p=0.030；插补样本：aOR 0.67，95%CI 0.51-0.88，p<0.003）。对两个样本的分层分析表明，具有≥10 年教育程度、GDS 评分<6 或行走速度≥1.0m/s 的电脑使用者认知能力下降的 aOR 降低（aOR 0.61-0.69，p<0.05）。那些教育年限<10 年、GDS 评分≥6 或行走速度<1.0m/s 的人没有表现出显著的相关性。
根据电脑使用者的特点，电脑使用与认知功能的纵向保护相关。
