The Wako Cohort Study: Design and Profile of Participants at Baseline
Background: We launched the Wako Cohort Study in 2023 to identify individual and socio-environmental factors related to the extension of healthy life expectancy and the reduction of health disparities among community-dwelling adults and to develop health promotion and care prevention strategies. Thi...
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| Format: | Article |
| Language: | English |
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Japan Epidemiological Association
2025-07-01
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| Series: | Journal of Epidemiology |
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| Online Access: | https://www.jstage.jst.go.jp/article/jea/35/7/35_JE20240288/_pdf |
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| author | Yuri Yokoyama Yu Nofuji Takumi Abe Kumiko Nonaka Yumi Ozone Yuka Nakamura Shiina Chiaki Takumi Suda Naoko Saito Mai Takase Hidenori Amano Susumu Ogawa Hiroyuki Suzuki Hiroshi Murayama |
| author_facet | Yuri Yokoyama Yu Nofuji Takumi Abe Kumiko Nonaka Yumi Ozone Yuka Nakamura Shiina Chiaki Takumi Suda Naoko Saito Mai Takase Hidenori Amano Susumu Ogawa Hiroyuki Suzuki Hiroshi Murayama |
| author_sort | Yuri Yokoyama |
| collection | DOAJ |
| description | Background: We launched the Wako Cohort Study in 2023 to identify individual and socio-environmental factors related to the extension of healthy life expectancy and the reduction of health disparities among community-dwelling adults and to develop health promotion and care prevention strategies. This study profile aims to describe the study design and participants’ profile at baseline. Methods: The Wako Cohort Study is a prospective study of community-dwelling adults aged ≥40 years living in Wako City, Saitama Prefecture, Japan. The Wako Cohort Study consists of two surveys: a mail-in survey for persons aged ≥40 years and a face-to-face assessment (on-site survey) for those aged ≥65 years. The survey items were designed considering the following points: 1) life course perspective (transition from middle to old age in the life course), 2) health indifference, and 3) employment in older age. Results: A total of 8,824 individuals participated in the mail-in survey (2,395 persons aged 40–64 years and 6,429 aged ≥65 years). Of those aged ≥65 years who returned the mail survey, 1,004 participated in the subsequent on-site survey. Men aged ≥65 years tended to have higher health interests than those aged 40–64 years; however, this was not true for women. In the mail-in survey, 30.4% of those aged ≥65 years were employed. Conclusion: The Wako Cohort Study is expected to provide new insights into the development of strategies to extend healthy life expectancy and reduce health disparities in Japan. |
| format | Article |
| id | doaj-art-7c9c52d4967b4a19beef95f00f8c790c |
| institution | Kabale University |
| issn | 0917-5040 1349-9092 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Japan Epidemiological Association |
| record_format | Article |
| series | Journal of Epidemiology |
| spelling | doaj-art-7c9c52d4967b4a19beef95f00f8c790c2025-08-20T03:30:14ZengJapan Epidemiological AssociationJournal of Epidemiology0917-50401349-90922025-07-0135734134810.2188/jea.JE20240288The Wako Cohort Study: Design and Profile of Participants at BaselineYuri Yokoyama0Yu Nofuji1Takumi Abe2Kumiko Nonaka3Yumi Ozone4Yuka Nakamura5Shiina Chiaki6Takumi Suda7Naoko Saito8Mai Takase9Hidenori Amano10Susumu Ogawa11Hiroyuki Suzuki12Hiroshi Murayama13Research Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanResearch Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, JapanBackground: We launched the Wako Cohort Study in 2023 to identify individual and socio-environmental factors related to the extension of healthy life expectancy and the reduction of health disparities among community-dwelling adults and to develop health promotion and care prevention strategies. This study profile aims to describe the study design and participants’ profile at baseline. Methods: The Wako Cohort Study is a prospective study of community-dwelling adults aged ≥40 years living in Wako City, Saitama Prefecture, Japan. The Wako Cohort Study consists of two surveys: a mail-in survey for persons aged ≥40 years and a face-to-face assessment (on-site survey) for those aged ≥65 years. The survey items were designed considering the following points: 1) life course perspective (transition from middle to old age in the life course), 2) health indifference, and 3) employment in older age. Results: A total of 8,824 individuals participated in the mail-in survey (2,395 persons aged 40–64 years and 6,429 aged ≥65 years). Of those aged ≥65 years who returned the mail survey, 1,004 participated in the subsequent on-site survey. Men aged ≥65 years tended to have higher health interests than those aged 40–64 years; however, this was not true for women. In the mail-in survey, 30.4% of those aged ≥65 years were employed. Conclusion: The Wako Cohort Study is expected to provide new insights into the development of strategies to extend healthy life expectancy and reduce health disparities in Japan.https://www.jstage.jst.go.jp/article/jea/35/7/35_JE20240288/_pdfcohort profilehealthy aginghealth disparitieshealthy life expectancy |
| spellingShingle | Yuri Yokoyama Yu Nofuji Takumi Abe Kumiko Nonaka Yumi Ozone Yuka Nakamura Shiina Chiaki Takumi Suda Naoko Saito Mai Takase Hidenori Amano Susumu Ogawa Hiroyuki Suzuki Hiroshi Murayama The Wako Cohort Study: Design and Profile of Participants at Baseline Journal of Epidemiology cohort profile healthy aging health disparities healthy life expectancy |
| title | The Wako Cohort Study: Design and Profile of Participants at Baseline |
| title_full | The Wako Cohort Study: Design and Profile of Participants at Baseline |
| title_fullStr | The Wako Cohort Study: Design and Profile of Participants at Baseline |
| title_full_unstemmed | The Wako Cohort Study: Design and Profile of Participants at Baseline |
| title_short | The Wako Cohort Study: Design and Profile of Participants at Baseline |
| title_sort | wako cohort study design and profile of participants at baseline |
| topic | cohort profile healthy aging health disparities healthy life expectancy |
| url | https://www.jstage.jst.go.jp/article/jea/35/7/35_JE20240288/_pdf |
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