Manabe Tomoki, Nemoto Yuta, Ueda Takuya, Yamada Takuya, Sato Shinichiro, Kitabatake Yoshinori, Takeda Noriko, Maruo Kazushi, Arao Takashi
Graduate School of Health Management, Keio University, Kanagawa, Japan; Sports Medicine Research Center, Keio University, Kanagawa, Japan; Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan; School of Public Health, The University of Queensland, Brisbane, Australia; Department of Preventive Medicine and Public Health, Tokyo Medical University, Tokyo, Japan; School of Health Innovation, Kanagawa University of Human Services, Kanagawa, Japan.
Arch Gerontol Geriatr. 2025 Oct;137:105945. doi: 10.1016/j.archger.2025.105945. Epub 2025 Jul 7.
Social isolation, which includes a limited social networks (SN) as one of its components, is a well-known risk factor for chronic conditions, including frailty and depression. However, associations between diverse SN and these conditions are not well understood. The aim of this study was to examine the associations between SN and frailty and depressive symptoms by gender, age, and economic status.
A two-year longitudinal study was conducted in Tsuru City, Yamanashi, Japan. Participants included all residents aged ≥65 years without physical disability (n = 3327). Surveys were conducted in January 2022 and January 2024. Frailty was assessed using the Kihon Checklist, depressive symptoms were evaluated by using the Geriatric Depression Scale-15, and SN was assessed using the Lubben Social Network Scale-6. Logistic regression models were conducted to compute odds ratios (OR) and 95 % confidence intervals (CI), stratified by gender, age, and economic status.
During the follow-up period, 15.7 % of participants developed frailty, and 10.6 % developed depressive symptoms. Older adults in the highest SN group were less likely to develop frailty (OR [95 % CI]: 0.62 [0.43, 0.88]) and depressive symptoms (OR [95 % CI]: 0.58 [0.38, 0.89]) compared with those in the lowest SN group. Those associations were more pronounced in females, individuals aged <75 years, and those with poor economic status.
Older adults with larger SN are less likely to develop frailty and depressive symptoms, particularly females, those aged <75 years, and those with poor economic status. This provides useful insights for future interventions.
社会隔离，其中包括有限的社交网络（SN）作为其组成部分之一，是包括衰弱和抑郁在内的慢性疾病的一个众所周知的风险因素。然而，不同社交网络与这些疾病之间的关联尚未得到充分理解。本研究的目的是按性别、年龄和经济状况研究社交网络与衰弱及抑郁症状之间的关联。
在日本山梨县都留市进行了一项为期两年的纵向研究。参与者包括所有年龄≥65岁且无身体残疾的居民（n = 3327）。调查于2022年1月和2024年1月进行。使用简易检查表评估衰弱情况，使用老年抑郁量表-15评估抑郁症状，并使用鲁本社交网络量表-6评估社交网络。进行逻辑回归模型以计算优势比（OR）和95%置信区间（CI），并按性别、年龄和经济状况进行分层。
在随访期间，15.7%的参与者出现衰弱，10.6%出现抑郁症状。与社交网络最低组的老年人相比，社交网络最高组的老年人发生衰弱（OR [95% CI]：0.62 [0.43, 0.88]）和抑郁症状（OR [95% CI]：0.58 [0.38, 0.89]）的可能性较小。这些关联在女性、年龄<75岁的个体以及经济状况较差的个体中更为明显。
社交网络较大的老年人发生衰弱和抑郁症状的可能性较小，尤其是女性、年龄<75岁的个体以及经济状况较差的个体。这为未来的干预措施提供了有用的见解。
