発表業績
Publications

1. Abe, K., Shibata, S., Miyawaki, A., & Kawachi, I. (2025). Changes in inpatient and outpatient stroke admissions during COVID-19: A difference-in-differences analysis based on claims data from 242 acute care hospitals in Japan. BMJ Public Health, 3(2), e001958. https://doi.org/10.1136/bmjph-2024-001958

2. Abe, K., Suzuki, K., Miyawaki, A., & Kawachi, I. (2025). Impact of COVID-19 on medical utilization for psychiatric conditions in Japan. Social Science & Medicine, 367, 117763. https://doi.org/10.1016/j.socscimed.2025.117763

3. Isogai, T., Morita, K., Okada, A., Michihata, N., Matsui, H., Miyawaki, A., & Yasunaga, H. (2025). Association Between Complementary Use of Daikenchuto (a Japanese Herbal Medicine) and Readmission in Older Patients With Heart Failure and Constipation. Circulation Reports, advpub. https://doi.org/10.1253/circrep.CR-24-0114

4. Iwai, C., Miyawaki, A., Konishi, T., Okada, A., Fujita, A., Jo, T., & Yasunaga, H. (2025). Ocular adverse events of perioperative adjuvant docetaxel vs paclitaxel for breast cancer: Propensity-score overlap-weighted analysis. Breast Cancer Research and Treatment. https://doi.org/10.1007/s10549-025-07720-8

5. Kawasaki, N., Miyawaki, A., Kimura, Y., Matsuo, Y., Fushimi, K., & Yasunaga, H. (2025). Association Between Dementia and Early Rehabilitation in Older Inpatients With Internal Medical Conditions. Journal of the American Medical Directors Association, 26(6), 105595. https://doi.org/10.1016/j.jamda.2025.105595

6. Komura, T., Ogawa, Y., Miyawaki, A., & Inoue, K. (2025). Congenital heart defects in the newborn infant and subsequent depression in parents: A nationwide cohort study. Annals of Epidemiology, 104, 28–34. https://doi.org/10.1016/j.annepidem.2025.02.015

7. Miyake, S., Miyawaki, A., Matsui, H., Kimura, Y., & Yasunaga, H. (2025). Hospital discharge prescription of drugs that may raise blood pressure in patients with hypertension. Pharmacoepidemiology and Drug Safety, 34(5), e70150. https://doi.org/10.1002/pds.70150

8. Miyawaki, A., Ladines-Lim, J. B., Sato, D., Kitajima, K., Linder, J. A., Fischer, M. A., Chua, K.-P., & Tsugawa, Y. (2025). Association of patient, physician and visit characteristics with inappropriate antibiotic prescribing in Japanese primary care: A cross-sectional study. BMJ Public Health, 3(2), e002364. https://doi.org/10.1136/bmjph-2024-002364

9. Miyawaki, A., Mafi, J. N., Abe, K., Klomhaus, A., Goto, R., Kitajima, K., Sato, D., & Tsugawa, Y. (2025). Primary care physician characteristics and low-value care provision in Japan. JAMA Health Forum, 6(6), e251430. https://doi.org/10.1001/jamahealthforum.2025.1430

10. Miyawaki, A., Mafi, J. N., Fukui, T., Kimura, Y., Kobayashi, D., Odawara, S., Abe, K., Goto, R., & Tsugawa, Y. (2025). Low-cost, high-volume healthcare services contribute the most to low-value care spending in Japan. Health Affairs Scholar, 3(12), qxaf225. https://doi.org/10.1093/haschl/qxaf225

11. Morioka, N., Moriwaki, M., Saville, C., Miyawaki, A., Fushimi, K., & Griffiths, P. (2025). Day and night nurse staffing levels and hospital-associated disability in older adults in Japan: A retrospective cohort study. Age and Ageing, 54(8), afaf217. https://doi.org/10.1093/ageing/afaf217

12. Sato, T., Abe, K., Miyawaki, A., Ohnishi, H., & Uhara, H. (2025). Analysis of the Incidence and Severity of Cellulitis During the COVID-19 Pandemic in Japan. The Journal of Dermatology, n/a(n/a). https://doi.org/10.1111/1346-8138.17853

13. Suzuki-Chiba, H., Miyawaki, A., Hakozaki, T., Aso, S., Matsui, H., & Yasunaga, H. (2025). Association Between Area-Level Socioeconomic Disadvantage and Immunotherapy in Patients With Non-Small Cell Lung Cancer. Cancer Medicine, 14(13), e71038. https://doi.org/10.1002/cam4.71038

14. Taniguchi, Y., Miyawaki, A., Iwagami, M., Sugiyama, T., Watanabe, T., Ito, T., & Tamiya, N. (2025). Association between informal caregiving and changes in cardiovascular-related health behaviors among middle-aged and older adults in Japan: A 15-year panel survey. Journal of Epidemiology, advpub. https://doi.org/10.2188/jea.JE20240197

1. Miyawaki, A., Mafi, J. N., Fendrick, A. M., & Tsugawa, Y. (2025). Low-value and no-value care in healthcare: A narrative review. Annals of Clinical Epidemiology, Epub ahead of print. https://doi.org/10.37737/ace.26013

1. Aoyama, R., Tsugawa, Y., Ishikane, M., Kitajima, K., Sato, D., & Miyawaki, A. (2024). Clinic characteristics and antibiotic prescribing for acute respiratory infections in Japan. JAMA Network Open, 7(10), e2440406. https://doi.org/10.1001/jamanetworkopen.2024.40406

2. Arai, J., Miyawaki, A., Aoki, T., Niikura, R., Hayakawa, Y., Fujiwara, H., Ihara, S., Fujishiro, M., & Kasuga, M. (2024). Association between Vonoprazan and the risk of gastric cancer after Helicobacter pylori eradication. Clinical Gastroenterology and Hepatology, 0(0). https://doi.org/10.1016/j.cgh.2024.01.037

3. Arai, J., Miyawaki, A., Hayakawa, Y., Aoki, T., Niikura, R., Fujiwara, H., Ushiku, T., Kasuga, M., & Fujishiro, M. (2024). The impact of machine learning-based prediction model on annual surveillance endoscopy costs for detecting gastric cancer. iGIE, 0(0). https://doi.org/10.1016/j.igie.2024.09.003

4. Iijima, H., Gouda, M., Hida, H., Mori-Anai, K., Takahashi, A., Minai, R., Ninomiya, H., Saito, Y., Miyawaki, A., & Wada, J. (2024). Renal outcomes with sodium-glucose cotransporter 2 inhibitors in Japanese people with grade 3 chronic kidney disease and type 2 diabetes: Analysis of medical administrative databases. Diabetes, Obesity and Metabolism, Epub ahead of print. https://doi.org/10.1111/dom.15461

5. Isogai, T., Michihata, N., Okada, A., Morita, K., Matsui, H., Miyawaki, A., Jo, T., & Yasunaga, H. (2024). Use of Japanese Herbal Kampo Medicine in Patients With Acute Cardiovascular Disease　― A 12-Year Nationwide Cohort Analysis ―. Circulation Journal, advpub. https://doi.org/10.1253/circj.CJ-23-0770

6. Isogai, T., Morita, K., Okada, A., Michihata, N., Matsui, H., Miyawaki, A., Jo, T., & Yasunaga, H. (2024). Association between complementary use of Goreisan (a Japanese herbal Kampo medicine) and heart failure readmission: A nationwide propensity score-matched study. Journal of Cardiology, 0(0). https://doi.org/10.1016/j.jjcc.2024.09.010

7. Isogai, T., Morita, K., Okada, A., Michihata, N., Matsui, H., Miyawaki, A., & Yasunaga, H. (2024). Association Between Coexisting Constipation and Heart Failure Readmission in Patients With Heart Failure　― A Nationwide Database Study ―. Circulation Reports, 6(11), 529–535. https://doi.org/10.1253/circrep.CR-24-0060

8. Matsuo, Y., Miyawaki, A., Watanabe, H., Matsui, H., Fushimi, K., & Yasunaga, H. (2024). Potassium Iodide Use and Patient Outcomes for Thyroid Storm: An Observational Study. The Journal of Clinical Endocrinology & Metabolism, dgae187. https://doi.org/10.1210/clinem/dgae187

9. Miyawaki, A., Jena, A. B., Rotenstein, L. S., & Tsugawa, Y. (2024). Comparison of Hospital Mortality and Readmission Rates by Physician and Patient Sex. Annals of Internal Medicine, 177(5), 598–608. https://doi.org/10.7326/M23-3163

10. Miyawaki, A., Kitajima, K., Iwata, A., Sato, D., & Tsugawa, Y. (2024). Physician characteristics associated with antiviral prescriptions for older adults with COVID-19 in Japan: An observational study. BMJ Open, 14(3), e083342. https://doi.org/10.1136/bmjopen-2023-083342

11. Miyawaki, A., & Tomio, J. (2024). Practice locations of physicians with highly educated spouses in Japan: A cross-sectional study using National Census Data. Journal of General and Family Medicine, n/a(n/a). https://doi.org/10.1002/jgf2.710

12. Morioka, N., Kashiwagi, M., Kashiwagi, K., Abe, K., & Miyawaki, A. (2024). Characteristics of first-time users of the nursing small-scale multifunctional home care service: A pooled cross-sectional study using Japanese long-term care insurance claims data from 2012 to 2019. BMJ Open, 14(5), e080664. https://doi.org/10.1136/bmjopen-2023-080664

13. Taniguchi, Y., Tamiya, N., Iwagami, M., Yamagishi, K., Miyawaki, A., Masuda, R., Kihara, T., Komiyama, J., Tachikawa, H., Takahashi, H., & Iso, H. (2024). Different trends in suicide rates among foreign residents in Japan and Japanese citizens during the COVID-19 pandemic. International Journal for Equity in Health, 23(1), 150. https://doi.org/10.1186/s12939-024-02234-z

1. 宮脇　敦士(2024) 医療経済研究機構2021年度版アメリカ報告書. 医療経済研究機構; 2024. (分担執筆)

1. Abe, K., Kawachi, I., Iba, A., & Miyawaki, A. (2023). In-hospital deaths from ambulatory care–sensitive conditions before and during the COVID-19 pandemic in Japan. JAMA Network Open, 6(6), e2319583. https://doi.org/10.1001/jamanetworkopen.2023.19583

2. Miyawaki, A., Jena, A. B., Burke, L. G., Figueroa, J. F., & Tsugawa, Y. (2023). Association between emergency physician's age and mortality of Medicare patients aged 65 to 89 years after emergency department visit. Annals of Emergency Medicine, 82(3), 301–312. https://doi.org/10.1016/j.annemergmed.2023.02.010

3. Miyawaki, A., Jena, A. B., Gross, N., & Tsugawa, Y. (2023). Comparison of hospital outcomes for patients treated by allopathic versus osteopathic hospitalists: An observational study. Annals of Internal Medicine, 176(6), 798–806. https://doi.org/10.7326/M22-3723

4. Miyawaki, A., Kitajima, K., Iwata, A., Sato, D., & Tsugawa, Y. (2023). Antibiotic prescription for outpatients with COVID-19 in primary care settings in Japan. JAMA Network Open, 6(7), e2325212. https://doi.org/10.1001/jamanetworkopen.2023.25212

5. Suzuki, T., Taniguchi, Y., Komiyama, J., Kuno, T., Adomi, M., Abe, T., Inokuchi, R., Miyawaki, A., Imai, S., Saito, M., Ohbe, H., Aso, S., Kamio, T., Tamiya, N., & Iwagami, M. (2023). Characteristics and in-hospital mortality of patients with COVID-19 from the first to fifth waves of the pandemic in 2020 and 2021 in the Japanese Medical Data Vision database. Heliyon, 9(9), e19490. https://doi.org/10.1016/j.heliyon.2023.e19490

1. Abe, K., Miyawaki, A., Kobayashi, Y., Noguchi, H., Takahashi, H., & Tamiya, N. (2019). Receiving the home care service offered by certified care workers prior to a patients' death and the probability of a home death: Observational research using an instrumental variable method from Japan. BMJ Open, 9(8), e026238. https://doi.org/10.1136/bmjopen-2018-026238

2. Abe, K., Miyawaki, A., Kobayashi, Y., Watanabe, T., & Tamiya, N. (2020). Place of death associated with types of long-term care services near the end-of-life for home-dwelling older people in Japan: A pooled cross-sectional study. BMC Palliative Care, 19(1), 121. https://doi.org/10.1186/s12904-020-00622-0

3. Abe, K., Miyawaki, A., Nakamura, M., Ninomiya, H., & Kobayashi, Y. (2021). Trends in hospitalizations for asthma during the COVID-19 outbreak in Japan. The Journal of Allergy and Clinical Immunology: In Practice, 9(1), 494–496. https://doi.org/10.1016/j.jaip.2020.09.060

4. Adomi, M., Kuno, T., Komiyama, J., Taniguchi, Y., Abe, T., Miyawaki, A., Imai, S., Morita, K., Saito, M., Ohbe, H., Kamio, T., Tamiya, N., & Iwagami, M. (2022). Association between pre‐admission anticoagulation and in‐hospital death, venous thromboembolism, and major bleeding among hospitalized COVID‐19 patients in Japan. Pharmacoepidemiology and Drug Safety, 31(6), 680–688. https://doi.org/10.1002/pds.5433

5. Gero, K., Miyawaki, A., & Kawachi, I. (2020). Relative income deprivation and all-cause mortality in Japan: Do life priorities matter? Annals of Behavioral Medicine, 54(9), 665–679. https://doi.org/10.1093/abm/kaaa010

6. Gotanda, H., Miyawaki, A., Tabuchi, T., & Tsugawa, Y. (2021). Association between trust in government and practice of preventive measures during the COVID-19 pandemic in Japan. Journal of General Internal Medicine, 36(11), 3471–3477. https://doi.org/10.1007/s11606-021-06959-3

7. Ikesu, R., Miyawaki, A., & Kobayashi, Y. (2020). Physician distribution by specialty and practice setting: Findings in Japan in 2000, 2010 and 2016. The Tohoku Journal of Experimental Medicine, 251(1), 1–8. https://doi.org/10.1620/tjem.251.1

8. Ikesu, R., Miyawaki, A., Sugiyama, T., Nakamura, M., Ninomiya, H., & Kobayashi, Y. (2021). Trends in diabetes care during the COVID-19 outbreak in Japan: An observational study. Journal of General Internal Medicine, 36(5), 1460–1462. https://doi.org/10.1007/s11606-020-06413-w

9. Ikesu, R., Miyawaki, A., Svensson, A. K., Svensson, T., Kobayashi, Y., & Chung, U. (2021). Association of managerial position with cardiovascular risk factors: A fixed-effects analysis for Japanese employees. Scandinavian Journal of Work, Environment & Health, 47(6), 425–434. https://doi.org/10.5271/sjweh.3966

10. Jin, X., Abe, K., Taniguchi, Y., Watanabe, T., Miyawaki, A., & Tamiya, N. (2021). Trajectories of long-term care expenditure during the last 5 years of life in Japan: A nationwide retrospective cohort study. Journal of the American Medical Directors Association, 22(11), 2231-2236.e2. https://doi.org/10.1016/j.jamda.2021.01.084

11. Kaneko, S., Noguchi, H., Fu, R., Kang, C., Kawamura, A., Amano, S., & Miyawaki, A. (2020). Differences in cancer patients' work-cessation risk, based on gender and type of job: Examination of middle-aged and older adults in super-aged Japan. PLoS ONE, 15(1), e0227792. https://doi.org/10.1371/journal.pone.0227792

12. Maeda, Y., Nakamura, M., Ninomiya, H., Ogawa, K., Sago, H., & Miyawaki, A. (2021). Trends in intensive neonatal care during the COVID-19 outbreak in Japan. Archives of Disease in Childhood - Fetal and Neonatal Edition, 106(3), 327–329. https://doi.org/10.1136/archdischild-2020-320521

13. Miyawaki, A. (2022). Full-time work rates of physicians with physician spouses vs nonphysician spouses in Japan. JAMA Network Open, 5(11), e2242143. https://doi.org/10.1001/jamanetworkopen.2022.42143

14. Miyawaki, A., Burke, L. G., Khullar, D., & Tsugawa, Y. (2020). Comparison of 30-day readmission and emergency department revisit rates among homeless patients at teaching versus non-teaching hospitals. Social Science & Medicine, 263, 113283. https://doi.org/10.1016/j.socscimed.2020.113283

15. Miyawaki, A., Evans, C. E. L., Lucas, P. J., & Kobayashi, Y. (2021). Relationships between social spending and childhood obesity in OECD countries: An ecological study. BMJ Open, 11(2), e044205. https://doi.org/10.1136/bmjopen-2020-044205

16. Miyawaki, A., Hasegawa, K., Figueroa, J. F., & Tsugawa, Y. (2020). Hospital readmission and emergency department revisits of homeless patients treated at homeless-serving hospitals in the USA: Observational study. Journal of General Internal Medicine, 35(9), 2560–2568. https://doi.org/10.1007/s11606-020-06029-0

17. Miyawaki, A., Hasegawa, K., & Tsugawa, Y. (2020). Lessons from influenza outbreaks for potential impact of COVIID-19 outbreak on hospitalizations, ventilator use, and mortality among homeless persons in New York state. Journal of General Internal Medicine, 35(9), 2781–2783. https://doi.org/10.1007/s11606-020-05876-1

18. Miyawaki, A., Ikesu, R., Tokuda, Y., Goto, R., Kobayashi, Y., Sano, K., & Tsugawa, Y. (2022). Prevalence and changes of low-value care at acute care hospitals: A multicentre observational study in Japan. BMJ Open, 12(9), e063171. https://doi.org/10.1136/bmjopen-2022-063171

19. Miyawaki, A., Khullar, D., & Tsugawa, Y. (2021). Processes of care and outcomes for homeless patients hospitalised for cardiovascular conditions at safety-net versus non-safety-net hospitals: Cross-sectional study. BMJ Open, 11(4), e046959. https://doi.org/10.1136/bmjopen-2020-046959

20. Miyawaki, A., & Kobayashi, Y. (2019). Effect of a medical subsidy on health service utilization among schoolchildren: A community-based natural experiment in Japan. Health Policy, 123(4), 353–359. https://doi.org/10.1016/j.healthpol.2019.02.003

21. Miyawaki, A., Kobayashi, Y., & Kawachi, I. (2020). Self-reported hearing/visual loss and mortality in middle-aged and older adults: Findings from the Komo-Ise cohort, Japan. Journal of Epidemiology, 30(2), 67–73. https://doi.org/10.2188/jea.JE20180198

22. Miyawaki, A., Kobayashi, Y., Noguchi, H., Watanabe, T., Takahashi, H., & Tamiya, N. (2020). Effect of reduced formal care availability on formal/informal care patterns and caregiver health: A quasi-experimental study using the Japanese long-term care insurance reform. BMC Geriatrics, 20(1), 207. https://doi.org/10.1186/s12877-020-01588-7

23. Miyawaki, A., Lee, J. S., & Kobayashi, Y. (2019). Impact of the school lunch program on overweight and obesity among junior high school students: A nationwide study in Japan. Journal of Public Health, 41(2), 362–370. https://doi.org/10.1093/pubmed/fdy095

24. Miyawaki, A., Noguchi, H., & Kobayashi, Y. (2017). Impact of medical subsidy disqualification on children's healthcare utilization: A difference-in-differences analysis from Japan. Social Science & Medicine, 191, 89–98. https://doi.org/10.1016/j.socscimed.2017.09.001

25. Miyawaki, A., Tabuchi, T., Ong, M. K., & Tsugawa, Y. (2021). Age and social disparities in the use of telemedicine during the COVID-19 pandemic in Japan: Cross-sectional study. Journal of Medical Internet Research, 23(7), e27982. https://doi.org/10.2196/27982

26. Miyawaki, A., Tabuchi, T., Tomata, Y., & Tsugawa, Y. (2021). Association between participation in the government subsidy programme for domestic travel and symptoms indicative of COVID-19 infection in Japan: Cross-sectional study. BMJ Open, 11(4), e049069. https://doi.org/10.1136/bmjopen-2021-049069

27. Miyawaki, A., Tanaka, H., Kobayashi, Y., & Kawachi, I. (2019). Informal caregiving and mortality―Who is protected and who is not? A prospective cohort study from Japan. Social Science & Medicine, 223, 24–30. https://doi.org/10.1016/j.socscimed.2019.01.034

28. Miyawaki, A., Tomio, J., Kobayashi, Y., Takahashi, H., Noguchi, H., & Tamiya, N. (2017). Impact of long-hours family caregiving on non-fatal coronary heart disease risk in middle-aged people: Results from a longitudinal nationwide survey in Japan. Geriatrics & Gerontology International, 17(11), 2109–2115. https://doi.org/10.1111/ggi.13061

29. Miyawaki, A., Tomio, J., Nakamura, M., Ninomiya, H., & Kobayashi, Y. (2021). Changes in surgeries and therapeutic procedures during the COVID-19 outbreak: A longitudinal study of acute care hospitals in Japan. Annals of Surgery, 273(4), e132–e134. https://doi.org/10.1097/SLA.0000000000004528

30. Miyawaki, A., Toyokawa, S., Inoue, K., Miyoshi, Y., & Kobayashi, Y. (2016). Self-reported periodontitis and incident type 2 diabetes among male workers from a 5-year follow-up to MY Health Up Study. PLoS One, 11(4), e0153464. https://doi.org/10.1371/journal.pone.0153464

31. Miyawaki, A., & Tsugawa, Y. (2020). Association between Newsweek's Global Hospital Ranking and patient outcomes in the USA. Journal of General Internal Medicine, 35(4), 1343–1344. https://doi.org/10.1007/s11606-019-05212-2

32. Sano, K., Miyawaki, A., Abe, K., Jin, X., Watanabe, T., Tamiya, N., & Kobayashi, Y. (2022). Effects of cost sharing on long-term care service utilization among home-dwelling older adults in Japan. Health Policy, 126(12), 1310–1316. https://doi.org/10.1016/j.healthpol.2022.10.002

33. Sano, K., Nakamura, M., Ninomiya, H., Kobayashi, Y., & Miyawaki, A. (2021). Large decrease in paediatric hospitalisations during the COVID-19 outbreak in Japan. BMJ Paediatrics Open, 5(1), e001013. https://doi.org/10.1136/bmjpo-2020-001013

34. Sun, Y., Iwagami, M., Watanabe, T., Sakata, N., Sugiyama, T., Miyawaki, A., & Tamiya, N. (2021). Factors associated with psychological distress in family caregivers: Findings from nationwide data in Japan. Geriatrics & Gerontology International, 21(9), 865–864. https://doi.org/10.1111/ggi.14250

35. Tanaka, H., Miyawaki, A., Toyokawa, S., & Kobayashi, Y. (2018). Relationship of relative poverty and social relationship on mortality around retirement: A 10-year follow-up of the Komo-Ise cohort. Environmental Health and Preventive Medicine, 23, 64. https://doi.org/10.1186/s12199-018-0756-6

36. Taniguchi, Y., Kuno, T., Komiyama, J., Adomi, M., Suzuki, T., Abe, T., Ishimaru, M., Miyawaki, A., Saito, M., Ohbe, H., Miyamoto, Y., Imai, S., Kamio, T., Tamiya, N., & Iwagami, M. (2022). Comparison of patient characteristics and in-hospital mortality between patients with COVID-19 in 2020 and those with influenza in 2017–2020: A multicenter, retrospective cohort study in Japan. The Lancet Regional Health - Western Pacific, 20, 100365. https://doi.org/10.1016/j.lanwpc.2021.100365

37. Taniguchi, Y., Miyawaki, A., Tsugawa, Y., Murayama, H., Tamiya, N., & Tabuchi, T. (2022). Family caregiving and changes in mental health status in Japan during the COVID-19 pandemic. Archives of Gerontology and Geriatrics, 98, 104531. https://doi.org/10.1016/j.archger.2021.104531

38. Yamamoto, A., Gelberg, L., Needleman, J., Kominski, G., Vangala, S., Miyawaki, A., & Tsugawa, Y. (2021). Comparison of childbirth delivery outcomes and costs of care between women experiencing vs not experiencing homelessness. JAMA Network Open, 4(4), e217491. https://doi.org/10.1001/jamanetworkopen.2021.7491

1. 宮脇　敦士(2024) 医療経済研究機構2021年度版アメリカ報告書. 医療経済研究機構; 2022. (分担執筆)

2. Miyawaki, A., & Tsugawa, Y. (2022). Why do homeless women in New York state experience fewer hospital revisits after childbirth than housed women? BMJ Quality & Safety, 31(4), 243–246. https://doi.org/10.1136/bmjqs-2021-013746

3. Miyawaki, A., & Tsugawa, Y. (2022). Health and public health implications of COVID-19 in Asian countries. Asian Economic Policy Review, 17(1), 18–36. https://doi.org/10.1111/aepr.12358