| Interplay between social isolation and loneliness and chronic systemic inflammation during the COVID-19 pandemic in Japan: Results from U-CORONA study Y Koyama, N Nawa, Y Yamaoka, H Nishimura, S Sonoda, J Kuramochi, ... Brain, Behavior, and Immunity 94, 51-59, 2021 | 48 | 2021 |
| Association between adverse childhood experiences and brain volumes among Japanese community-dwelling older people: findings from the NEIGE study Y Koyama, T Fujiwara, H Murayama, M Machida, S Inoue, Y Shobugawa Child Abuse & Neglect 124, 105456, 2022 | 12 | 2022 |
| Association between social integration and face mask use behavior during the Sars-Cov-2 pandemic in Japan: results from U-Corona study N Nawa, Y Yamaoka, Y Koyama, H Nishimura, S Sonoda, J Kuramochi, ... International Journal of Environmental Research and Public Health 18 (9), 4717, 2021 | 10 | 2021 |
| Is Japan’s child allowance effective for the well-being of children? A statistical evaluation using data from K-CHILD study Y Koyama, T Fujiwara, A Isumi, S Doi BMC Public Health 20, 1-12, 2020 | 8 | 2020 |
| Degree of influence in class modifies the association between social network diversity and well-being: Results from a large population-based study in Japan Y Koyama, T Fujiwara, A Isumi, S Doi Social Science & Medicine 260, 113170, 2020 | 7 | 2020 |
| Association of parental dissatisfaction and perceived inequality of post-disaster recovery process with child mental health Y Koyama, T Fujiwara, J Yagi, H Mashiko, GEJE Follow-up, ... Social Science & Medicine 296, 114723, 2022 | 6 | 2022 |
| Joint roles of oxytocin-and dopamine-related genes and childhood parenting experience in maternal supportive social network Y Koyama, N Nawa, M Ochi, PJ Surkan, T Fujiwara Child Psychiatry & Human Development 55 (3), 614-621, 2024 | 5 | 2024 |
| Impact of alcohol outlet density on reported cases of child maltreatment in Japan: Fixed effects analysis Y Koyama, T Fujiwara Frontiers in public health 7, 265, 2019 | 5 | 2019 |
| Association between gratitude, the brain and cognitive function in older adults: Results from the NEIGE study Y Tani, Y Koyama, S Doi, G Sugihara, M Machida, S Amagasa, ... Archives of Gerontology and Geriatrics 100, 104645, 2022 | 4 | 2022 |
| Association of parental social network diversity with behaviour problems and resilience of offspring in a large population-based study of Japanese children Y Koyama, T Fujiwara, A Isumi, S Doi BMJ open 10 (10), e035100, 2020 | 4 | 2020 |
| The impact of public assistance on child mental health in Japan: results from A-CHILD study Y Koyama, T Fujiwara, A Isumi, M Ochi Journal of public health policy 42 (1), 98-112, 2021 | 3 | 2021 |
| Do Social Ties Moderate the Association between Childhood Maltreatment and Gratitude in Older Adults? Results from the NEIGE Study S Doi, Y Koyama, Y Tani, H Murayama, S Inoue, T Fujiwara, ... International Journal of Environmental Research and Public Health 18 (21), 11082, 2021 | 3 | 2021 |
| “What Did You Do in the War, Daddy?”: Paternal Military Conscription During WWII, Economic Hardship and Family Violence in Childhood, and Health in Late Life … T Fujiwara, Y Koyama, A Isumi, Y Matsuyama, Y Tani, Y Ichida, K Kondo, ... Journal of interpersonal violence 38 (13-14), 8114-8135, 2023 | 2 | 2023 |
| Poverty from fetal life onward and child brain morphology Y Koyama, APC Hidalgo, RE Lacey, T White, PW Jansen, T Fujiwara, ... Scientific Reports 13 (1), 1295, 2023 | 2 | 2023 |
| Association between social engagements and stigmatization of COVID-19 infection among community population in Japan Y Koyama, N Nawa, Y Yamaoka, H Nishimura, J Kuramochi, T Fujiwara International Journal of Environmental Research and Public Health 19 (15), 9050, 2022 | 2 | 2022 |
| Competitiveness, country economic inequality and adolescent well-being: Analysis of 60 countries Y Koyama, T Fujiwara Social Science & Medicine 325, 115892, 2023 | 1 | 2023 |
| Heart rate variability in 2014 predicted delayed onset of internalizing problems in 2015 among children affected by the 2011 Great East Japan Earthquake Y Koyama, T Fujiwara, S Doi, A Isumi, A Morita, Y Matsuyama, Y Tani, ... Journal of Psychiatric Research 151, 642-648, 2022 | 1 | 2022 |
| Association of lifestyle and flourishing during the COVID-19 pandemic in Japan T Shibata, Y Yamaoka, N Nawa, H Nishimura, Y Koyama, J Kuramochi, ... Frontiers in Psychology 15, 1341711, 2024 | | 2024 |
| Longitudinal associations between physical discipline and externalizing behavioral problems across childhood Y Kyeong, M Sudo, Y Koyama, B Broekman, JG Eriksson, HY Chen, ... | | 2024 |
| Association between residential greenness and severe psychological distress and the moderating role of ‘stay-at-home’status: a population-based cross-sectional study during the … H Nishimura, N Nawa, Y Yamaoka, Y Koyama, J Kuramochi, T Fujiwara BMJ Public Health 1 (1), 2023 | | 2023 |
