Koichiro Shiba | Profiles RNS

Koichiro Shiba, PhD, MPH

Assistant Professor

Boston University School of Public Health

Epidemiology

PhD, Harvard School of Public Health
MPH, University of Tokyo
BA, University of Tokyo

Websites

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ORCID : 0000-0001-7956-6485

My overarching research goal is using rigorous causal inference thinking and methods to improve evidence on social determinants of health and health disparities. Rather than merely applying complex methods, my motto is to harness their full potential by identifying and applying the methods to the unique challenges in social epidemiologic studies where they truly shine.

I lead a multitude of projects spanning a broad spectrum of methodological issues, including but not limited to: analyzing time-varying treatments to derive different, policy-relevant insights, and identifying when conventional single-point exposure analysis may be misleading; the use of machine learning methods for robust effect estimation and assessing high-dimensional heterogeneous exposure effects, capturing the intersectionality; the consideration of causal estimands and selection bias in trauma studies with sample attrition; novel approaches to characterize and operationalize neighborhood characteristics; and a novel causal inference method to simulate the impacts of realistic hypothetical interventions on health disparities.

In addition to these methodological focuses, I have worked on several key substantive areas that address urgent public health concerns. First, I study the effects of stressful experiences and traumatic events (such as climate change, disasters, child adversity, pandemics, and global financial crises) on population health, with a particular focus on older adult populations. Second, I investigate the roles of social relationships, social engagement (e.g., volunteering), and related exposures such as loneliness and social isolation) in promoting the health of older adults and fostering resilience. I have also explored how internet-based social interactions can influence population health. Third, I study the impacts of positive psychological factors (for instance, purpose in life, Ikigai) on health. My research further delves into inequalities in and determinants of multidimensional well-being (i.e., human flourishing), which extends beyond traditional physical and mental health outcomes and include other key domains of human well-being such as purpose in life and social well-being. In essence, my objective for this line of research is to study health in its fullest sense, defined by the World Health Organization as “a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity.”

Diversity, Equity, Inclusion and Accessibility

Dr. Shiba's research directly concerns addressing inequalities. As a social epidemiologist, Dr. Shiba studies social determinants of health (SDH). Although examining the population average impact of SDH as an upstream determinant of health is valuable on its own for disease prevention at the population level and promoting public health, his SDH research has also considered a) the distributions of the SDHs within and across populations and b) how the effects of the SDHs can be heterogeneous. Dr. Shiba also leveraged his expertise in measuring health disparity and applied it to the science of well-being, where the focus of research has been primarily on assessing population averages.

Dr. Shiba values diversity and inclusion in research as keys to general academic excellence because investigators’ identities (e.g., nationality, gender, race/ethnicity) and educational backgrounds (e.g., clinicians, social scientists, statistician) influence many aspects of research such as research questions and hypotheses, methodology, and interpretation of data.

BU Research

Racial and ethnic disparities in patient outcomes and intra-arrest resuscitation practices for in-hospital cardiac arrest
08/15/2024 - 07/31/2026 (Subcontract PI)
The University of Pittsburgh NIH NHLBI
1R21HL175712-01

Racial and Ethnic Differences in Emergency Medical Services Interventions for Out-of- Hospital Cardiac Arrest
06/24/2024 - 01/31/2026 (Subcontract PI)
The University of Pittsburgh NIH NIMHD
5R21MD019370-02

Volunteering, Polygenic Risk, and Cardiovascular Biomarkers in Multiple Ancestry Groups
02/01/2024 - 08/31/2025 (Subcontract PI)
Texas State University NIH NHLBI
1R01HL171806-01

Title

Yr	Title	Project-Sub Proj	Pubs

Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.

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Okuzono SS, Shiba K, Zhu DT, Oh S, Hsu YT, Yazawa A, Hikichi H, Aida J, Kondo K, Tiemeier H, Kawachi I. Disaster-related home loss, mental health, and risk of cognitive disability: causal mediation analysis using longitudinal data of disaster survivors. Am J Epidemiol. 2025 Dec 02; 194(12):3501-3509. PMID: 40977047; DOI: 10.1093/aje/kwaf208;

Ide K, Nakagomi A, Kawaguchi K, Shioya R, Takeuchi H, Tsuji T, Abe N, Kondo K, Shiba K. Points-Based Health Incentive Program and Subsequent Health and Well-Being in Japan: An Outcome-Wide Approach. J Am Geriatr Soc. 2025 Oct; 73(10):3166-3176. PMID: 40913483; DOI: 10.1111/jgs.70081;

Takemura Y, Inoue K, Sato K, Haseda M, Shiba K, Kondo N. Social Participation and Depressive Symptoms Among Older Adults. JAMA Netw Open. 2025 Sep 02; 8(9):e2530523. PMID: 40920380; PMCID: PMC12418130; DOI: 10.1001/jamanetworkopen.2025.30523;

Macchia L, Okafor CN, Breedlove T, Shiba K, Piper A, Johnson B, VanderWeele TJ. A cross-national analysis of childhood predictors of physical pain. Commun Med (Lond). 2025 Aug 07; 5(1):337. PMID: 40775017; PMCID: PMC12331892; DOI: 10.1038/s43856-025-00997-2;

Chopik WJ, Rosella L, Helliwell J, Shiba K, Kim ES. Life satisfaction moderates the impact of daily stressors on well-being and health. Health Psychol. 2025 Jul 17. PMID: 40673995; DOI: 10.1037/hea0001538;

Nakamura JS, Gibson CB, Woodberry RD, Lee MT, Kim YI, Shiba K, Padgett RN, Johnson BR, VanderWeele TJ. Understanding who volunteers globally through an examination of demographic variation in volunteering across 22 countries. Sci Rep. 2025 Jul 13; 15(1):25299. PMID: 40653523; PMCID: PMC12256606; DOI: 10.1038/s41598-025-05459-2;

Ritchie-Dunham JL, Yancey G, Managi S, Bartel C, Bonhag R, Padgett RN, Shiba K, Johnson BR, VanderWeele TJ. Childhood predictors of social support and intimate friends in a Cross-National analysis of the global flourishing study. Sci Rep. 2025 Jul 11; 15(1):25068. PMID: 40646068; PMCID: PMC12254347; DOI: 10.1038/s41598-025-09953-5;

Cowden RG, Chen ZJ, Wilkinson R, Weziak-Bialowolska D, Breedlove T, Gundersen C, Shiba K, Padgett RN, Johnson BR, VanderWeele TJ. Childhood predictors of suffering in adulthood across 22 countries. Commun Med (Lond). 2025 Jun 06; 5(1):217. PMID: 40481302; PMCID: PMC12144105; DOI: 10.1038/s43856-025-00913-8;

Ritchie-Dunham JL, Yancey G, Managi S, Bartel C, Bonhag R, Padgett N, Shiba K, Johnson BR, VanderWeele TJ. Demographic Variation in Social Support and Intimate Friend Across 22 Countries: A Cross-National Analysis. Int J Appl Posit Psychol. 2025; 10(2):37. PMID: 40453540; PMCID: PMC12125150; DOI: 10.1007/s41042-025-00226-0;

Nakagomi A, Kondo K, Shiba K. Heterogeneity in the association between internet use and dementia among older adults: A machine-learning analysis. Arch Gerontol Geriatr. 2025 Sep; 136:105912. PMID: 40456200

Showing 10 of 94 results. Show More

Cowden RG, Worthington EL, Weziak-Bialowolska D, Yancey G, Witvliet CVO, Shiba K, Padgett RN, Bradshaw M, Johnson BR, VanderWeele TJ. Childhood Predictors of Dispositional Forgivingness in Adulthood: A Cross-National Analysis with 22 Countries. Appl Res Qual Life. 2025; 20(3):1057-1084. PMID: 40787646; PMCID: PMC12328535; DOI: 10.1007/s11482-025-10451-z;

Macchia L, Okafor CN, Breedlove T, Shiba K, Piper A, Johnson B, VanderWeele TJ. Demographic variation in pain across 22 countries. Commun Med (Lond). 2025 May 05; 5(1):154. PMID: 40325153; PMCID: PMC12053548; DOI: 10.1038/s43856-025-00858-y;

Nakamura JS, Shiba K, Shi B, Leong RS, VanderWeele TJ, Kim ES. How is volunteering associated with reduced mortality? A mediator-wide approach. Health Psychol. 2025 May; 44(5):518-527. PMID: 40232787

Rakesh D, Shiba K, Lamont M, Lund C, Pickett KE, VanderWeele TJ, Patel V. Economic Inequality and Mental Health: Causality, Mechanisms, and Interventions. Annu Rev Clin Psychol. 2025 May; 21(1):353-377. PMID: 40333273

Nakamura JS, Woodberry RD, Gibson CB, Lee MT, Kim YI, Shiba K, Padgett RN, Johnson BR, VanderWeele TJ. Childhood predictors of volunteering across 22 countries in the Global Flourishing Study. Sci Rep. 2025 Apr 30; 15(1):14797. PMID: 40307232; PMCID: PMC12043808; DOI: 10.1038/s41598-024-81639-w;

Chen Y, Kubzansky LD, Kim ES, Koga H, Shiba K, Padgett RN, Wilkinson R, Johnson BR, VanderWeele TJ. The distribution of optimism across sociodemographic groups in 22 countries. Sci Rep. 2025 Apr 30; 15(1):14553. PMID: 40307250; PMCID: PMC12043849; DOI: 10.1038/s41598-024-77257-1;

Cowden RG, Worthington EL, Chung CA, De Kock JH, Weziak-Bialowolska D, Yancey G, Shiba K, Padgett RN, Bradshaw M, Johnson BR, VanderWeele TJ. Sociodemographic variation in dispositional forgivingness: a cross-national analysis with 22 countries. Sci Rep. 2025 Apr 30; 15(1):12144. PMID: 40307281; PMCID: PMC12043934; DOI: 10.1038/s41598-024-82502-8;

Lomas T, Noah Padgett R, Ritchie-Dunham JL, Lee MT, Pawelski JO, Shiba K, Johnson BR, VanderWeele TJ. An exploratory cross-national analysis of the childhood predictors of inner peace in the Global Flourishing Study. Sci Rep. 2025 Apr 30; 15(1):11328. PMID: 40307288; PMCID: PMC12044011; DOI: 10.1038/s41598-024-83353-z;

Nakamura JS, Woodberry RD, Weziak-Bialowolska D, Kubzansky LD, Shiba K, Padgett RN, Johnson BR, VanderWeele TJ. Childhood predictors of charitable giving and helping across 22 countries in the Global Flourishing Study. Sci Rep. 2025 Apr 30; 15(1):14493. PMID: 40307299; PMCID: PMC12044005; DOI: 10.1038/s41598-024-77950-1;

Lomas T, Padgett RN, Ritchie-Dunham JL, Pawelski JO, Shiba K, Johnson BR, VanderWeele TJ. Childhood predictors of balance in life: a cross-national analysis of the global flourishing study. Sci Rep. 2025 Apr 30; 15(1):13301. PMID: 40307301; PMCID: PMC12043796; DOI: 10.1038/s41598-025-89853-w;

Wilkinson R, Shiba K, Gibson CB, Okafor CN, Chen Y, Bradshaw M, Johnson BR, VanderWeele TJ. Life course insights into social relationship quality: a cross-national analysis of 22 countries. Sci Rep. 2025 Apr 30; 15(1):12096. PMID: 40307315; PMCID: PMC12044081; DOI: 10.1038/s41598-025-86246-x;

Nakamura JS, Weziak-Bialowolska D, Woodberry RD, Kubzansky LD, Shiba K, Padgett RN, Johnson BR, VanderWeele TJ. Demographic variation in charitable giving and helping across 22 countries in the Global Flourishing Study. Sci Rep. 2025 Apr 30; 15(1):14802. PMID: 40307329; PMCID: PMC12043921; DOI: 10.1038/s41598-025-96009-3;

Cowden RG, Chen ZJ, Wilkinson R, Weziak-Bialowolska D, Breedlove T, Gundersen C, Shiba K, Padgett RN, Johnson BR, VanderWeele TJ. A cross-national analysis of sociodemographic variation in suffering across 22 countries. Commun Med (Lond). 2025 Apr 30; 5(1):144. PMID: 40307360; PMCID: PMC12043856; DOI: 10.1038/s43856-025-00859-x;

Padgett RN, Bradshaw M, Chen Y, Cowden RG, Jang SJ, Kim ES, Shiba K, Johnson BR, VanderWeele TJ. Analytic methodology for childhood predictor analyses for wave 1 of the Global Flourishing Study. BMC Glob Public Health. 2025 Apr 30; 3(1):29. PMID: 40307919; PMCID: PMC12042376; DOI: 10.1186/s44263-025-00142-0;

Chen Y, Kubzansky LD, Kim ES, Koga H, Shiba K, Padgett RN, Wilkinson R, Johnson BR, VanderWeele TJ. When the glass is half full: early life experiences and adult optimism in 22 countries. Npj Ment Health Res. 2025 Apr 30; 4(1):12. PMID: 40307504; PMCID: PMC12044022; DOI: 10.1038/s44184-024-00109-3;

Kim ES, Bradshaw M, Noah Padgett R, Chen Y, Shiba K, Ritchie-Dunham JL, Case BW, Johnson BR, VanderWeele TJ. Identifying childhood correlates of adult purpose and meaning across 22 countries (Global Flourishing Study). Npj Ment Health Res. 2025 Apr 30; 4(1):14. PMID: 40307581; PMCID: PMC12043817; DOI: 10.1038/s44184-025-00127-9;

Padgett RN, Bradshaw M, Chen Y, Cowden RG, Jang SJ, Kim ES, Shiba K, Johnson BR, VanderWeele TJ. Analytic methodology for demographic variation analyses for wave 1 of the global flourishing study. BMC Glob Public Health. 2025 Apr 30; 3(1):28. PMID: 40307901; PMCID: PMC12042347; DOI: 10.1186/s44263-025-00140-2;

VanderWeele TJ, Johnson BR, Bialowolski PT, Bonhag R, Bradshaw M, Breedlove T, Case B, Chen Y, Chen ZJ, Counted V, Cowden RG, de la Rosa PA, Felton C, Fogleman A, Gibson C, Grigoropoulou N, Gundersen C, Jang SJ, Johnson KA, Kent BV, Kim ES, Kim YI, Koga HK, Lee MT, Le Pertel N, Lomas T, Long KNG, Macchia L, Makridis CA, Markham L, Nakamura JS, Norman-Krause N, Okafor CN, Okuzono SS, Ouyang ST, Padgett RN, Paltzer J, Ritchie-Dunham JL, Ritter Z, Shiba K, Srinivasan R, Ssozi J, Weziak-Bialowolska D, Wilkinson R, Woodberry RD, Wortham J, Yancey G. The Global Flourishing Study: Study Profile and Initial Results on Flourishing. Nat Ment Health. 2025; 3(6):636-653. PMID: 40521104; PMCID: PMC12165845; DOI: 10.1038/s44220-025-00423-5;

Yazawa A, Li X, Shiba K, Okuzono SS, Hikichi H, Aida J, Kondo K, Kawachi I. Resilience Factors Affecting Long-Term Trajectories of Depressive Symptoms in the Aftermath of the Great East Japan Earthquake and Tsunami Among Older Adults. J Gerontol B Psychol Sci Soc Sci. 2025 Mar 12; 80(4). PMID: 39520149; PMCID: PMC11898207; DOI: 10.1093/geronb/gbae182;

Komura T, Bargagli-Stoffi FJ, Shiba K, Inoue K. Two-step pragmatic subgroup discovery for heterogeneous treatment effects analyses: perspectives toward enhanced interpretability. Eur J Epidemiol. 2025 Feb; 40(2):141-150. PMID: 40038141; PMCID: PMC12018488; DOI: 10.1007/s10654-025-01215-y;

Wang K, Kino S, Matsuyama Y, Shiba K, Nakagomi A, Kondo K, Shirai K, Fueki K, Aida J. Association between oral health and multidimensional flourishing: A cross-sectional study from Japan Gerontological Evaluation Study (JAGES). J Prosthodont Res. 2025 Nov 18; 69(4):500-508. PMID: 39938902

Nakagomi A, Ide K, Kondo K, Shiba K. Digital Gaming and Subsequent Health and Well-Being Among Older Adults: Longitudinal Outcome-Wide Analysis. J Med Internet Res. 2025 Jan 27; 27:e69080. PMID: 39869904; PMCID: PMC11811670; DOI: 10.2196/69080;

Okuzono SS, Burrows K, Shiba K, Yazawa A, Hikichi H, Aida J, Kondo K, Kawachi I. Pre-disaster income inequality and post-disaster mental health: A natural experiment from the 2011 Great East Japan Earthquake and Tsunami. Health Place. 2024 Nov; 90:103363. PMID: 39362076; DOI: 10.1016/j.healthplace.2024.103363;

Takeda S, Haseda M, Sato K, Shiba K, Nakagomi A, Ide K, Kondo N. Community-level social capital and subsequent health and well-being among older adults in Japan: An outcome-wide longitudinal approach. Health Place. 2024 Sep; 89:103336. PMID: 39121522

Tamura M, Nakagomi A, Ide K, Kondo K, Ojima T, Takasugi T, Shiba K. Volunteer group participation and subsequent health and well-being among older adults in Japan: An outcome-wide longitudinal approach. Arch Gerontol Geriatr. 2024 Nov; 126:105537. PMID: 38878597

Shiba K, Inoue K. Harnessing causal forests for epidemiologic research: key considerations. Am J Epidemiol. 2024 Jun 03; 193(6):813-818. PMID: 38319713

Kim ES, Wilkinson R, Okuzono SS, Chen Y, Shiba K, Cowden RG, VanderWeele TJ. Positive affect during adolescence and health and well-being in adulthood: An outcome-wide longitudinal approach. PLoS Med. 2024 Apr; 21(4):e1004365. PMID: 38564500; PMCID: PMC10986977; DOI: 10.1371/journal.pmed.1004365;

Matsuyama Y, Aida J, Kondo K, Shiba K. Heterogeneous Association of Tooth Loss with Functional Limitations. J Dent Res. 2024 Apr; 103(4):369-377. PMID: 38533640; DOI: 10.1177/00220345241226957;

Hong JH, Nakamura JS, Sahakari SS, Chopik WJ, Shiba K, VanderWeele TJ, Kim ES. The silent epidemic of loneliness: identifying the antecedents of loneliness using a lagged exposure-wide approach. Psychol Med. 2024 Jun; 54(8):1519-1532. PMID: 38497115

Yazawa A, Hikichi H, Shiba K, Okuzono SS, Kondo K, Sasaki S, Kawachi I. Association of disaster-related damage with inflammatory diet among older survivors of the Great East Japan Earthquake and Tsunami. Br J Nutr. 2024 May 14; 131(9):1648-1656. PMID: 38258409; PMCID: PMC11042994; DOI: 10.1017/S0007114524000217;

Okuzono SS, Slopen N, Shiba K, Yazawa A, Kondo K, Kawachi I. Do Adverse Childhood Experiences Modify the Association Between Disaster-Related Trauma and Cognitive Disability? Am J Epidemiol. 2024 Jan 08; 193(1):36-46. PMID: 37442811; PMCID: PMC10773476; DOI: 10.1093/aje/kwad158;

Toshiaki Komura, Richard G. Cowden, Ruijia Chen, Ryan M. Andrews, Koichiro Shiba. Estimating the heterogeneous effect of life satisfaction on cognitive functioning among older adults: Evidence of US and UK national surveys. SSM-Mental Health. 2023; 4. View Publication
Tim Lomas, Pablo Diego-Rosell, Koichiro Shiba, Priscilla Standridge, Matthew T. Lee, Alden Yuanhong La. The world prefers a calm life, but not everyone gets to have one: global trends in valuing and experiencing calmness in the Gallup World Poll. The Journal of Positive Psychology. 2023; 1-4. View Publication

Nakamura JS, Shiba K, Jensen SM, VanderWeele TJ, Kim ES. Who Benefits From Helping? Moderators of the Association Between Informal Helping and Mortality. Ann Behav Med. 2023 Nov 16; 57(12):1058-1068. PMID: 37540830; PMCID: PMC11484603; DOI: 10.1093/abm/kaad042;

Cowden RG, Chen ZJ, Fancourt D, Shiba K. Place, Spirituality, and Well-Being: A Global and Multidisciplinary Approach. Can prayer during COVID-19 home confinement support psychological health after lockdowns end? A longitudinal study of UK adults. Springer International Publishing. New York, USA. 2023; 143-162. View Publication

Hikichi H, Shiba K, Aida J, Kondo K, Kawachi I. Association between sense of coherence and health and well-being among older survivors of a natural disaster: a prospective outcome-wide study. Sci Rep. 2023 Sep 29; 13(1):16385. PMID: 37773258; PMCID: PMC10542327; DOI: 10.1038/s41598-023-43672-z;

Li J, Shirai K, Okuzono SS, Shiba K, Kondo K, Kawachi I, Iso H. Sense of Coherence and Incident Dementia in Older Japanese Adults: The Japan Gerontological Evaluation Study. J Am Med Dir Assoc. 2024 Feb; 25(2):225-231.e6. PMID: 37652088

Kino S, Tamada Y, Takeuchi K, Nakagomi A, Shiba K, Kusama T, Yamamoto T, Aida J. Exploring the relationship between oral health and multiple health conditions: An outcome-wide approach. J Prosthodont Res. 2024 Jul 08; 68(3):415-424. PMID: 37574274

Ide K, Nakagomi A, Tsuji T, Yamamoto T, Watanabe R, Yokoyama M, Shirai K, Kondo K, Shiba K. Participation in Community Gathering Places and Subsequent Health and Well-Being: An Outcome-Wide Analysis. Innov Aging. 2023; 7(9):igad084. PMID: 38106374; PMCID: PMC10724175; DOI: 10.1093/geroni/igad084;

Hong JH, Nakamura JS, Berkman LF, Chen FS, Shiba K, Chen Y, Kim ES, VanderWeele TJ. Are loneliness and social isolation equal threats to health and well-being? An outcome-wide longitudinal approach. SSM Popul Health. 2023 Sep; 23:101459. PMID: 37546381; PMCID: PMC10400921; DOI: 10.1016/j.ssmph.2023.101459;

Yazawa A, Shiba K, Okuzono SS, Hikichi H, Kawachi I. Bidirectional associations between post-traumatic stress symptoms and sleep quality among older survivors of the 2011 Great East Japan Earthquake and Tsunami. Sleep. 2023 Jun 13; 46(6). PMID: 37029901; PMCID: PMC10465083; DOI: 10.1093/sleep/zsad106;

Nakagomi A, Tsuji T, Saito M, Ide K, Kondo K, Shiba K. Social isolation and subsequent health and well-being in older adults: A longitudinal outcome-wide analysis. Soc Sci Med. 2023 Jun; 327:115937. PMID: 37167920

Okuzono SS, Wilkinson R, Shiba K, Yazawa A, VanderWeele T, Slopen N. Residential instability during adolescence and health and wellbeing in adulthood: A longitudinal outcome-wide study. Health Place. 2023 Mar; 80:102991. PMID: 36857896

Shiba K, Daoud A, Hikichi H, Yazawa A, Aida J, Kondo K, Kawachi I. Uncovering Heterogeneous Associations Between Disaster-Related Trauma and Subsequent Functional Limitations: A Machine-Learning Approach. Am J Epidemiol. 2023 Feb 01; 192(2):217-229. PMID: 36255224; PMCID: PMC10308508; DOI: 10.1093/aje/kwac187;

Yazawa A, Shiba K, Hikichi H, Okuzono SS, Aida J, Kondo K, Sasaki S, Kawachi I. Post-Disaster Mental Health and Dietary Patterns among Older Survivors of an Earthquake and Tsunami. J Nutr Health Aging. 2023; 27(2):124-133. PMID: 36806867; PMCID: PMC9982700; DOI: 10.1007/s12603-023-1887-z;

Hirose N, Chen S, Shiba K, Patil CL, Rahman MM, Shimpuku Y. Universal health coverage of five essential health services in mothers before and after the Haiti 2010 earthquake: a retrospective cohort study using difference-in-difference. BMC Health Serv Res. 2022 Dec 10; 22(1):1505. PMID: 36496431; PMCID: PMC9737961; DOI: 10.1186/s12913-022-08896-1;

Inoue K, Haseda M, Shiba K, Tsuji T, Kondo K, Kondo N. Social Isolation and Depressive Symptoms Among Older Adults: A Multiple Bias Analysis Using a Longitudinal Study in Japan. Ann Epidemiol. 2023 Jan; 77:110-118. PMID: 36417983; DOI: 10.1016/j.annepidem.2022.11.001;

Shiba K, Kubzansky LD, Williams DR, VanderWeele TJ, Kim ES. Purpose in life and 8-year mortality by gender and race/ethnicity among older adults in the U.S. Prev Med. 2022 Nov; 164:107310. PMID: 36283485; PMCID: PMC11044184; DOI: 10.1016/j.ypmed.2022.107310;

Nagai M, Hikichi H, Shiba K, Kondo K, Kawachi I, Aida J. Long-Term Trend in the Association Between Disaster Damage and Happiness Before and After the Great East Japan Earthquake. Int J Public Health. 2022; 67:1604901. PMID: 36188751; PMCID: PMC9515324; DOI: 10.3389/ijph.2022.1604901;

Shiba K, Hikichi H, Okuzono SS, VanderWeele TJ, Arcaya M, Daoud A, Cowden RG, Yazawa A, Zhu DT, Aida J, Kondo K, Kawachi I. Long-Term Associations between Disaster-Related Home Loss and Health and Well-Being of Older Survivors: Nine Years after the 2011 Great East Japan Earthquake and Tsunami. Environ Health Perspect. 2022 Jul; 130(7):77001. PMID: 35776697; PMCID: PMC9249145; DOI: 10.1289/EHP10903;

Kawahara T, Shiba K, Tsuchiya A. Application of Causal Inference Methods in the Analysis of Observational Neurosurgical Data: G-Formula and Marginal Structural Model. World Neurosurg. 2022 May; 161:310-315. PMID: 35505549

Guimond AJ, Shiba K, Kim ES, Kubzansky LD. Sense of purpose in life and inflammation in healthy older adults: A longitudinal study. Psychoneuroendocrinology. 2022 07; 141:105746. PMID: 35364478; PMCID: PMC9149071; DOI: 10.1016/j.psyneuen.2022.105746;

Shiba K, Cowden RG, Counted V, VanderWeele TJ, Fancourt D. Associations of home confinement during COVID-19 lockdown with subsequent health and well-being among UK adults. Curr Psychol. 2022 Mar 15; 1-10. PMID: 35309290; PMCID: PMC8922081; DOI: 10.1007/s12144-022-03001-5;

Okuzono SS, Shiba K, Lee HH, Shirai K, Koga HK, Kondo N, Fujiwara T, Kondo K, Grodstein F, Kubzansky LD, Trudel-Fitzgerald C. Optimism and Longevity Among Japanese Older Adults. J Happiness Stud. 2022 Aug; 23(6):2581-2595. PMID: 36919080; PMCID: PMC10010677; DOI: 10.1007/s10902-022-00511-8;

Okuzono SS, Shiba K, Lee HH, Shirai K, Koga KH, Kondo N, Fujiwara T, Kondo K, Grodstein F, Kubzansky LD, Trudel-Fitzgerald C. Optimism and Longevity Among Japanese Older Adults. Journal of Happiness Studies. 2022; (23):2581-2595.

Shiba K, Cowden RG, Gonzalez N, Ransome Y, Nakagomi A, Chen Y, Lee MT, VanderWeele TJ, Fancourt D. Associations of online religious participation during COVID-19 lockdown with subsequent health and well-being among UK adults. Psychol Med. 2023 Jul; 53(9):3887-3896. PMID: 35189993; PMCID: PMC10317791; DOI: 10.1017/S0033291722000551;

Shiba K, Cowden RG, Gonzalez N, Lee MT, Lomas T, Lai AY, VanderWeele TJ. Global Trends of Mean and Inequality in Multidimensional Wellbeing: Analysis of 1.2 Million Individuals From 162 Countries, 2009-2019. Front Public Health. 2022; 10:824960. PMID: 35237554; PMCID: PMC8882600; DOI: 10.3389/fpubh.2022.824960;

Okuzono SS, Shiba K, Kim ES, Shirai K, Kondo N, Fujiwara T, Kondo K, Lomas T, Trudel-Fitzgerald C, Kawachi I, VanderWeele TJ. Ikigai and subsequent health and wellbeing among Japanese older adults: Longitudinal outcome-wide analysis. Lancet Reg Health West Pac. 2022 Apr; 21:100391. PMID: 35141667; PMCID: PMC8814687; DOI: 10.1016/j.lanwpc.2022.100391;

Yazawa A, Shiba K, Inoue Y, Okuzono SS, Inoue K, Kondo N, Kondo K, Kawachi I. Early childhood adversity and late-life depressive symptoms: unpacking mediation and interaction by adult socioeconomic status. Soc Psychiatry Psychiatr Epidemiol. 2022 Jun; 57(6):1147-1156. PMID: 35103808

Shiba K, Daoud A, Kino S, Nishi D, Kondo K, Kawachi I. Uncovering heterogeneous associations of disaster-related traumatic experiences with subsequent mental health problems: A machine learning approach. Psychiatry Clin Neurosci. 2022 Apr; 76(4):97-105. PMID: 34936171; PMCID: PMC9102396; DOI: 10.1111/pcn.13322;

Kamada M, Hayashi H, Shiba K, Taguri M, Kondo N, Lee IM, Kawachi I. Large-Scale Fandom-based Gamification Intervention to Increase Physical Activity: A Quasi-experimental Study. Med Sci Sports Exerc. 2022 01 01; 54(1):181-188. PMID: 34366420; PMCID: PMC8677610; DOI: 10.1249/MSS.0000000000002770;

Lomas T, Lai A, Shiba K, Diego-Rosell P, Uchida Y, VanderWeele JT. World Happiness Report. Insights from the first global survey of balance and harmony. 2022; 127-154.

Shiba K, Torres JM, Daoud A, Inoue K, Kanamori S, Tsuji T, Kamada M, Kondo K, Kawachi I. Estimating the Impact of Sustained Social Participation on Depressive Symptoms in Older Adults. Epidemiology. 2021 11 01; 32(6):886-895. PMID: 34172690

Shiba K, Daoud A, Hikichi H, Yazawa A, Aida J, Kondo K, Kawachi I. Heterogeneity in cognitive disability after a major disaster: A natural experiment study. Sci Adv. 2021 Oct; 7(40):eabj2610. PMID: 34586850; PMCID: PMC8480922; DOI: 10.1126/sciadv.abj2610;

Shiba K, Kawahara T, Aida J, Kondo K, Kondo N, James P, Arcaya M, Kawachi I. Causal Inference in Studying the Long-Term Health Effects of Disasters: Challenges and Potential Solutions. Am J Epidemiol. 2021 09 01; 190(9):1867-1881. PMID: 33728430; PMCID: PMC8579004; DOI: 10.1093/aje/kwab064;

Nakagomi A, Shiba K, Ueno T, Kondo K, Kawachi I. General health checks and incident dementia: A six-year follow-up study of community-dwelling older adults in Japan. Prev Med. 2021 12; 153:106757. PMID: 34348136

Shiba K, Kawahara T. Using Propensity Scores for Causal Inference: Pitfalls and Tips. J Epidemiol. 2021 Aug 05; 31(8):457-463. PMID: 34121051; PMCID: PMC8275441; DOI: 10.2188/jea.JE20210145;

Kino S, Hsu YT, Shiba K, Chien YS, Mita C, Kawachi I, Daoud A. A scoping review on the use of machine learning in research on social determinants of health: Trends and research prospects. SSM Popul Health. 2021 Sep; 15:100836. PMID: 34169138; PMCID: PMC8207228; DOI: 10.1016/j.ssmph.2021.100836;

Shiba K, Kubzansky LD, Williams DR, VanderWeele TJ, Kim ES. Associations Between Purpose in Life and Mortality by SES. Am J Prev Med. 2021 08; 61(2):e53-e61. PMID: 34020851; PMCID: PMC8319073; DOI: 10.1016/j.amepre.2021.02.011;

Nakagomi A, Shiba K, Kondo K, Kawachi I. Can Online Communication Prevent Depression Among Older People? A Longitudinal Analysis. J Appl Gerontol. 2022 01; 41(1):167-175. PMID: 33356760

Shiba K, Yazawa A, Kino S, Kondo K, Aida J, Kawachi I. Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment. Wellbeing Space Soc. 2020; 1. PMID: 36238446; PMCID: PMC9555822; DOI: 10.1016/j.wss.2020.100006;

Shiba K, Hanazato M, Aida J, Kondo K, Arcaya M, James P, Kawachi I. Cardiometabolic Profiles and Change in Neighborhood Food and Built Environment Among Older Adults: A Natural Experiment. Epidemiology. 2020 11; 31(6):758-767. PMID: 33003147; PMCID: PMC7534567; DOI: 10.1097/EDE.0000000000001243;

Ogawa T, Yoshii T, Moriwaki M, Morishita S, Oh Y, Miyatake K, Nazarian A, Shiba K, Okawa A, Fushimi K, Fujiwara T. Association between Hemiarthroplasty vs Total Hip Arthroplasty and Major Surgical Complications among Patients with Femoral Neck Fracture. J Clin Med. 2020 Oct 03; 9(10). PMID: 33023020; PMCID: PMC7601407; DOI: 10.3390/jcm9103203;

Shiba K, Aida J, Kondo K, Nakagomi A, Arcaya M, James P, Kawachi I. Mediation of the relationship between home loss and worsened cardiometabolic profiles of older disaster survivors by post-disaster relocation: A natural experiment from the Great East Japan earthquake and tsunami. Health Place. 2020 11; 66:102456. PMID: 33010662; PMCID: PMC7686264; DOI: 10.1016/j.healthplace.2020.102456;

Nakagomi A, Shiba K, Kondo K, Kawachi I. Can social capital moderate the impact of widowhood on depressive symptoms? A fixed-effects longitudinal analysis. Aging Ment Health. 2021 10; 25(10):1811-1820. PMID: 32687396

Nakagomi A, Shiba K, Hanazato M, Kondo K, Kawachi I. Does community-level social capital mitigate the impact of widowhood & living alone on depressive symptoms?: A prospective, multi-level study. Soc Sci Med. 2020 08; 259:113140. PMID: 32645611

Kim ES, Shiba K, Boehm JK, Kubzansky LD. Sense of purpose in life and five health behaviors in older adults. Prev Med. 2020 10; 139:106172. PMID: 32593729; PMCID: PMC7494628; DOI: 10.1016/j.ypmed.2020.106172;

Shiba K, Hikichi H, Aida J, Kondo K, Kawachi I. Long-Term Associations Between Disaster Experiences and Cardiometabolic Risk: A Natural Experiment From the 2011 Great East Japan Earthquake and Tsunami. Am J Epidemiol. 2019 06 01; 188(6):1109-1119. PMID: 30874714; PMCID: PMC7301774; DOI: 10.1093/aje/kwz065;

Shiba K, Kondo N. The Global Financial Crisis and Overweight among Children of Single Parents: A Nationwide 10-Year Birth Cohort Study in Japan. Int J Environ Res Public Health. 2019 03 20; 16(6). PMID: 30897687; PMCID: PMC6466597; DOI: 10.3390/ijerph16061001;

Saito T, Kondo N, Shiba K, Murata C, Kondo K. Income-based inequalities in caregiving time and depressive symptoms among older family caregivers under the Japanese long-term care insurance system: A cross-sectional analysis. PLoS One. 2018; 13(3):e0194919. PMID: 29590211; PMCID: PMC5874058; DOI: 10.1371/journal.pone.0194919;

Shiba K, Kondo N, Kondo K, Kawachi I. Retirement and mental health: dose social participation mitigate the association? A fixed-effects longitudinal analysis. BMC Public Health. 2017 05 30; 17(1):526. PMID: 28558670

Shiba K, Kondo N, Kondo K. Informal and Formal Social Support and Caregiver Burden: The AGES Caregiver Survey. J Epidemiol. 2016 Dec 05; 26(12):622-628. PMID: 27180934

Shiba K, Nishimoto M, Sugimoto M, Ishikawa Y. Correction: The Association between Meditation Practice and Job Performance: A Cross-Sectional Study. PLoS One. 2015; 10(12):e0145140. PMID: 26673436

Shiba K, Nishimoto M, Sugimoto M, Ishikawa Y. The Association between Meditation Practice and Job Performance: A Cross-Sectional Study. PLoS One. 2015; 10(5):e0128287. PMID: 26024382

This graph shows the total number of publications by year, by first, middle/unknown, or last author.

Bar chart showing 94 publications over 11 distinct years, with a maximum of 32 publications in 2025

Bar chart showing 94 publications over 11 distinct years, with a maximum of 32 publications in 2025

Year	Publications
2015	2
2016	1
2017	1
2018	1
2019	2
2020	8
2021	7
2022	17
2023	14
2024	9
2025	32

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