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カワグチ ケンジロウ
KAWAGUCHI Kenjirou
河口 謙二郎 所属 医学部 医学科 職種 助教 |
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| 論文種別 | 原著 |
| 言語種別 | 英語 |
| 査読の有無 | 査読あり |
| 表題 | Development and Psychometric Validation of the Japanese Version of the Everyday Ageism Scale (EAS-J) Among Older Adults. |
| 掲載誌名 | 正式名：Geriatrics & gerontology international 略 称：Geriatr Gerontol Int ISSNコード：14470594/14470594 |
| 掲載区分 | 国外 |
| 巻・号・頁 | 26(7),pp.e70641 |
| 著者・共著者 | Kenjiro Kawaguchi†*, Chie Koga, Ayae Yamada, Isaku Kurotori, Hiroki Takeuchi, Lingling, Atsushi Nakagomi |
| 担当区分 | 筆頭著者,責任著者 |
| 発行年月 | 2026/07 |
| 概要 | AIM:Japan lacks a validated tool to measure everyday ageism, leaving its prevalence and health impact unclear. This study aimed to develop and validate the Japanese version of the Everyday Ageism Scale (EAS-J) in older adults.METHODS:We used a mixed-methods design comprising forward and back translation, cognitive interviews, and a nationwide cross-sectional online survey of 1500 adults ages 60-79 years. In September 2025, participants were recruited from an online panel using quota sampling to reflect national demographic distributions. We evaluated psychometric properties using confirmatory factor analysis, reliability coefficients, and validity indices. A Multiple Indicators Multiple Causes model was used to assess associations with loneliness, stress, well-being, self-esteem, and happiness.RESULTS:The EAS-J demonstrated a three-factor structure-exposure to ageist messages, ageism in interpersonal interactions, and internalized ageism. Model fit was good on three of the four indices (comparative fit index = 0.971, Tucker-Lewis Index = 0.959, Root Mean Square Error of Approximation = 0.075, Standardized Root Mean Square Residual = 0.037). Internal consistency was good (Cronbach's α = 0.83), test-retest reliability was moderate (Intraclass Correlation Coefficient = 0.66), and convergent and discriminant validity were supported. The scale showed significant associations with perceived stress, loneliness, well-being, and self-esteem, supporting nomological validity.CONCLUSIONS:The EAS-J is a psychometrically supported, multidimensional instrument for measuring everyday ageism among older adults in Japan. Availability of the EAS-J will facilitate research on the prevalence and health consequences of everyday ageism and inform development of interventions to promote healthy aging. |
| DOI | 10.1111/ggi.70641 |
| PMID | 42425503 |