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研究活動、研究業績等

Tsuyoshi Okuhara

Publications in English

  1. Murakami K, Shinozaki N, Okuhara T, McCaffrey TA, Livingstone MBE. Self-perceived food literacy in relation to the quality of overall diet and main meals: A cross-sectional study in Japanese adults. Appetite. 2024 May 1;196:107281. doi: 10.1016/j.appet.2024.107281.
  2. Furukawa E, Okuhara T, Okada H, Kiuchi T. Accessibility of COVID-19-related public websites in Japan. American Journal of Health Education. 2024. In press.
  3. Okuhara T. Last trip to heaven. Patient Educ Couns. 2024 Mar 5;123:108242. doi: 10.1016/j.pec.2024.108242.
  4. Murakami K, Shinozaki N, Okuhara T, McCaffrey TA, Livingstone MBE. Prevalence and Correlates of Dietary and Nutrition Information Seeking Through Various Web-Based and Offline Media Sources Among Japanese Adults: Web-Based Cross-Sectional Study. JMIR Public Health Surveill. 2024 Feb 14;10:e54805. doi: 10.2196/54805.
  5. Goto E, Ishikawa H, Okuhara T, Okada H, Tsunezumi A, Kagawa Y, Kiuchi T. Factors associated with adherence to recommendations for medical visits following annual health checkups among Japanese employees: A prospective cohort study. Prev Med Rep. 2023 Dec 21;37:102565. doi: 10.1016/j.pmedr.2023.102565.
  6. Okuhara T, Shirabe R, Kagawa Y, Okada H, Kiuchi T. Encouraging COVID-19 vaccination by focusing on anticipated affect: A scoping review. Heliyon. 2023 Nov 18;9(12):e22655. doi: 10.1016/j.heliyon.2023.e22655.
  7. Murakami K, Shinozaki N, Kimoto N, Onodera H, Oono F, McCaffrey TA, Livingstone MBE, Okuhara T, Matsumoto M, Katagiri R, Ota E, Chiba T, Nishida Y, Sasaki S. Web-Based Content on Diet and Nutrition Written in Japanese: Infodemiology Study Based on Google Trends and Google Search. JMIR Form Res. 2023 Nov 16;7:e47101. doi: 10.2196/47101.
  8. Terada M, Okuhara T, Nagasawa T, Okada H, Goto E, Kiuchi T. Public perception of the resumption of HPV vaccine recommendation in Japan: Twitter content analysis. Health Promot Int. 2023 Dec 1;38(6):daad153. doi: 10.1093/heapro/daad153.
  9. Furukawa E, Okuhara T, Okada H, Sawada N, Kiuchi T. Evaluating understandability and actionability of online education materials for home-care patients with COVID-19 in Japan. BMC Res Notes. 2023 Oct 25;16(1):291. doi: 10.1186/s13104-023-06570-1.
  10. Furukawa E, Okuhara T, Okada H, Nishiie Y, Kiuchi T. Evaluating the understandability and actionability of online CKD educational materials. Clin Exp Nephrol. 2024 Jan;28(1):31-39. doi: 10.1007/s10157-023-02401-6.
  11. Yokota, R.; Okuhara, T.; Okada, H.; Furukawa, E.; Kiuchi, T. Japanese Magazine Articles on Lifestyle Factors Associated with Fertility: A Content Analysis. Women 2023, 3, 408-420. https://doi.org/10.3390/women3030031
  12. Shirabe R, Okada H, Okuhara T, Yokota R, Kiuchi T. Development of the Japanese Version of Pregnancy-Related Anxiety Questionnaire-Revised-2: Measurement and Psychometric Properties. Healthcare (Basel). 2023 Jul 4;11(13):1935. doi: 10.3390/healthcare11131935.
  13. Furukawa E, Okuhara T, Okada H, Fujitomo Y, Osa M, Hashiba T, Kiuchi T. Evaluating the understandability and actionability of online educational videos on pre-dialysis chronic kidney disease. Nephrology (Carlton). 2023 Nov;28(11):620-628. doi: 10.1111/nep.14226.
  14. Okuhara T, Kagawa Y, Furukawa E, Okada H, Yokota R, Kiuchi T. Realism and length of narrative for further research in health communication. Patient Educ Couns. 2023 Sep;114:107859. doi: 10.1016/j.pec.2023.107859.
  15. Okuhara T, Okada H, Kiuchi T. Addressing message fatigue for encouraging COVID-19 vaccination. J Commun Healthc. 2023 Oct;16(3):298-303. doi: 10.1080/17538068.2023.2207246.
  16. Okuhara T, Kagawa Y, Okada H, Tsunezumi A, Kiuchi T. Intervention studies to encourage HPV vaccination using narrative: a scoping review. Patient Education and Counseling. 2023;107689-107689.https://doi.org/10.1016/j.pec.2023.107689
  17. Okada H, Okuhara T, Goto E, Kiuchi T. Association between trust in COVID-19 information sources and engaging in infection prevention behaviors in Japan: a longitudinal study. Patient Education and Couseling. 2023;107686-107686.https://doi.org/10.1016/j.pec.2023.107686
  18. Shirabe R, Okuhara T, Okada H, Goto E, Kiuchi T. Support needs for anxiety among pregnant women in Japan: A qualitative pilot study. Women 2023, 3(1), 95-106. https://doi.org/10.3390/women3010008
  19. Kagawa Y, Ishikawa H, Son D, Okuhara T, Okada H, Ueno H, Goto E, Tsunezumi1 A, Kiuchi T. Using patient storytelling to improve medical students' empathy in Japan: a pre-post study. BMC Medical Education 2023; 23:67. https://doi.org/10.1186/s12909-023-04054-1
  20. Okada H, Okuhara T, Goto E, Kiuchi T. Associations between vaccination behavior and trust in information sources regarding COVID-19 vaccines under emergency approval in Japan: a cross-sectional study. Vaccines 2023, 11(2), 233; https://doi.org/10.3390/vaccines11020233
  21. Nagasawa T, Okuhara T, Terada M, Okada H, Goto E, Kiuchi T. Print materials to promote physical activities in Japan: Content analysis from a goal theory. Healthcare 2023, 11(2), 239; https://doi.org/10.3390/healthcare11020239
  22. Okuhara T, Terada M, Kagawa Y, Okada H, Kiuchi T. Anticipated Affect that Encourages and Discourages Human Papillomavirus Vaccination: a Scoping Review. Vaccines. 2023; 11, 124. https://doi.org/10.3390/vaccines11010124
  23. Furukawa E, Okuhara T, Okada H, Shirabe R, Yokota R, Iye R, Kiuchi T. Translation, cross-cultural adaptation, and validation of the Japanese version of The Patient Education Materials Assessment Tool (PEMAT). International Journal of Environmental Research and Public Health 2022; 19, 15763 https://doi.org/10.3390/ijerph192315763
  24. Kato M, Ishikawa H, Kiuchi T, Akiyama M, Kawamura Y, Okuhara T, Ono N, Miyawaki R. Patterns of Alcohol and alcohol-flavoured non-alcoholic beverage advertisements Over Japanese free-to-air television networks. BMC Public Health 2022; 22:1864. https://doi.org/10.1186/s12889-022-14276-5
  25. Yokota R, Okuhara T, Okada H, Goto E, Sakakibara K, Kiuchi T. Associations between Stigma, Cognitive Appraisals, Coping Strategies and Stress Responses among Japanese Women Undergoing Infertility Treatment. Healthcare 2022; 10(10):1907. https://doi.org/10.3390/healthcare10101907
  26. Yokota R, Okuhara T, Okada H, Goto E, Sakakibara K, Kiuchi T. Association between Stigma and Anxiety, Depression, and Psychological Distress among Japanese Women Undergoing Infertility Treatment. Healthcare 2022, 10, 1300. https://doi.org/10.3390/healthcare10071300
  27. Goto E, Ishikawa H, Okuhara T, Okada H, Tsunezumi A, Kagawa Y, Fujino Y, Kiuchi T. Associations between job and workplace factors, health and physical factors, personal factors, and presenteeism among general employees in Japan: A longitudinal study. Journal of Occupational Health 2022;e12344 https://doi.org/10.1002/1348-9585.12344
  28. Okuhara T, Okada H, Goto E, Tsunezumi A, Kagawa Y, Kiuchi T. Encouragement of cervical cancer screening via an evolutionary theoretical approach: a randomized controlled study in Japan. Preventive Medicine Reports. 2022; 27:101818 https://doi.org/10.1016/j.pmedr.2022.101818
  29. Okuhara T, Okada H, Goto E, Tsunezumi A, Kagawa Y, Kiuchi T. Encouraging HPV Vaccination via an Evolutionary Theoretical Approach: A Randomized Controlled Study in Japan. Vaccines 2022; 10(5):701 https://doi.org/10.3390/vaccines10050701
  30. Yokota R, Okada H, Okuhara T, Goto E, Furukawa E, Shirabe R, Sakakibara K, Kiuchi T. Development of the Japanese version of the Infertility Stigma Scale: Examination of its reliability and validity. Healthcare 2022; 10(3):505 DOI: 10.3390/healthcare10030505.
  31. Okuhara T, Okada H, Goto E, Tsunezumi A, Kagawa Y, Kiuchi T. Types of anticipated affect that encourage and discourage vaccination: a scoping review protocol. BMJ Open (in press)
  32. Okuhara T, Okada H, Goto E, Tsunezumi A, Kagawa Y, Kiuchi T. Encouraging COVID-19 vaccination via an evolutionary theoretical approach: a randomized controlled study in Japan. Patient Education and Counseling. 2022; S0738-3991(22)00085-4. DOI: 10.1016/j.pec.2022.02.013.
  33. Iye R, Okuhara T, Okada H, Goto E, Furukawa E, Kiuchi T. The Effect of Exposure to “Exemption” Video Advertisements for Functional Foods: A Randomized Control Study in Japan. Healthcare 2022; 10:2 DOI: 10.3390/healthcare10020345
  34. Okuhara T, Okada H, Goto E, Kiuchi T. Intervention studies to encourage vaccination using narrative: a systematic scoping review protocol. BMJ Open (in press)
  35. Okada H, Okuhara T, Kiuchi T. Development and preliminary evaluation of tablet computer-based decision aid for patients participating in cancer clinical trials. Contemporary Clinical Trials Communications 2021; DOI: 10.1016/j.conctc.2021.100854
  36. Okuhara T, Yokota R, Shirabe R, Iye R, Okada H, Kiuchi T, Chiba T, Akamatsu R. Japanese newspaper advertisements for dietary supplements before and after COVID-19: a content analysis. BMJ Open 2021;11:e050898. DOI: 10.1136/bmjopen-2021-050898
  37. Okada H, Kiuchi T, Okuhara T, Kizawa Y. Effect of advance care planning discussions with trained nurses in older adults with chronic diseases in Japan. Journal of Palliative Medicine 2022; 11(2) DOI: 10.21037/apm-21-2161
  38. Okuhara T, Okada H, Goto E, Kiuchi T. Urgent need for writing education in schools of medicine and public health to address vaccine hesitancy. Int J Med Educ. 2021: 12:166-168.
  39. Okuhara T, Okada H, Goto E, Kiuchi T. Readability Assessment of HPV Vaccination and Cervical Cancer Information: A Systematic Scoping Review. Healthcare. 2021;9(10):1246-1246.
  40. Tsuyoshi Okuhara, Hiroko Okada, Takahiro Kiuchi. Lessons Learned from a Writing to Learn Program for Public Health Students at the University of Tokyo. Journal of Medical Education and Curricular Development. 2021;8:23821205211032014.
  41. Iye R, Okuhara T, Okada H, Yokota R, Kiuchi T. A Content Analysis of Video Advertisements for Dietary Supplements in Japan. Healthcare. 2021; 9(6):742.
  42. Shimpo M, Akamatsu R, Kojima Y, Yokoyama T, Okuhara T, Chiba T. Factors Associated with Dietary Change since the Outbreak of COVID-19 in Japan. Nutrients. 2021; 13(6):2039.
  43. Tsuyoshi Okuhara, Hirono Ishikawa, Haruka Ueno, Hiroko Okada, Mio Kato, Takahiro Kiuchi. Readability assessment of vaccine information: a systematic review for addressing vaccine hesitancy. Patient Education and Counseling.2021:S0738-3991(21)00395-5.
  44. Health Care Providers’ Knowledge, Confidence, Difficulties, and Practices after Completing a Communication Skills Training Program for Advance Care Planning Discussion in Japan. Hiroko Okada, Tatsuya Morita, Takahiro Kiuchi, Tsuyoshi Okuhara, Yoshiyuki Kizawa. Annals of Palliative Medicine. 2021;10(7):7225-7235.
  45. Ritsuko Shirabe, Tsuyoshi Okuhara, Rie Yokota, Hiroko Okada, Eiko Goto, Takahiro Kiuchi. Changes in Anxiety and Stress Among Pregnant Women During the COVID-19 Pandemic: Content Analysis of a Japanese Social Question-and-Answer Website. JMIR Pediatrics and Parenting. 2021; 4(3): e27733.
  46. Haruka Ueno, Hirono Ishikawa, Mio Kato, Tsuyoshi Okuhara, Hiroko Okada, Takahiro Kiuchi. Factors related to self-care drug treatment focusing on medication adherence of older adults in Japan. Public Health in Practice. 2021;100106.
  47. Keiichi Yuwaki, Aya Kuchiba, Aki Otsuki, Miyuki Odawara, Tsuyoshi Okuhara, Hirono Ishikawa, Manami Inoue, Shoichiro Tsugane, Taichi Shimazu. Effectiveness of a cancer risk prediction tool on lifestyle habits: a randomized controlled trial. Cancer Epidemiology, Biomarkers & Prevention. 2021; 30(6):1063-1071.
  48. Okuhara T, Okada H, Kiuchi T. Predictors of Staying at Home during the COVID-19 Pandemic and Social Lockdown based on Protection Motivation Theory: A Cross-sectional Study in Japan. Healthcare 8:275, 2020. DOI:10.3390/healthcare8040475
  49. Okada H, Takenouchi S, Okuhara T, Ueno H, Kiuchi T. Development of a Japanese Version of the Advance Care Planning Engagement Survey: Examination of its Reliability and Validity. Palliative & Supportive Care. 2021;19(3):341-347.
  50. Okuhara T, Ishikawa H, Ueno H, Okada H, Kiuchi T. Dual-process theories to counter against anti-vaccination movement. Preventive Medicine Reports. 2020;20:101205.
  51. Goto E, Ishikawa H, Okuhara T, Ueno H, Okada H, Fujino Y, Kiuchi T. Presenteeism among workers: health-related factors, work-related factors, and health literacy. Occupational Medicine. 2020;70(8):564-569.
  52. Okuhara T, Okada H, Kiuchi T. Examining persuasive message type to encourage staying at home during the COVID-19 pandemic and social lockdown: A randomized controlled study in Japan. Patient Education and Counseling 103(12):2588-2593, 2020. DOI:10.1016/j.pec.2020.08.016
  53. Yokota R, Okuhara T, Ueno H, Okada H, Furukawa E, Kiuchi T. Online Japanese-Language Information on Lifestyle Factors Associated With Reduced Fertility: Content Analysis. Journal of Medical Internet Research 22(8):e19777, 2020. DOI:10.2196/19777
  54. Okuhara T, Ishikawa H, Ueno H, Okada H, Kato M, Kiuchi T. Influence of high versus low readability level of written health information on self-efficacy: a randomized controlled study of the processing fluency effect. Health Psychology Open. 2020;7(1): :2055102920905627.
  55. Haragi M, Yamaguchi R, Okuhara T, Kiuchi T. Questionnaire survey of a mock jury on their impressions of medical-legal illustrations aimed at reducing trauma and PTSD of jurors. Journal of Visual Communication in Medicine.2020;43(2):67-75.
  56. Haragi M, Yamaguchi R, Okuhara T, Kiuchi T. Interviewing forensic specialists regarding medical-legal illustration methods to replace gruesome graphic evidence. Journal of Visual Communication in Medicine. 43(1):27-34,2020
  57. Okuhara T, Ishikawa H, Okada M, Kato M, Kiuchi T. Newspaper coverage before and after the HPV vaccination crisis began in Japan: A text mining analysis. BMC Public Health. 19:770, 2019
  58. Goto E, Ishikawa H, Okuhara T, Kiuchi T. Relationship of health literacy with utilization of health-care services in a general Japanese population. Preventive Medicine Reports 14: 100811, 2019.
  59. Okuhara T, Ishikawa H, Okada M, Kato M, Kiuchi T: Amount of narratives used on Japanese pro- and anti-HPV vaccination websites: a content analysis. Asian Pacific Journal of Cancer Prevention 19(10):2691-2694, 2018
  60. Goto E, Ishikawa H, Okuhara T, Kiuchi T: Relationship between health literacy and adherence to recommendations to undergo cancer screening and health-related behaviors among insured women in Japan. Asian Pacific Journal of Cancer prevention, 19(12): 3409-3413, 2018
  61. Okuhara T, Ishikawa H, Urakubo A, Hayakawa M, Yamaki C, Takayama T, Kiuchi T. Cancer information needs according to cancer type: A content analysis of data from Japan's largest cancer information website. Preventive Medicine Reports 12: 245-252, 2018
  62. Okuhara T., Ishikawa H., Goto E., Okada M., Kato M., Kiuchi T. Processing fluency effect of a leaflet for breast and cervical cancer screening: a randomized controlled study in Japan. Psychology, Health & Medicine 23(10):1250-1260, 2018.
  63. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. A qualitative analysis of the beliefs of Japanese anti-influenza vaccination website authors. Heliyon. 2018;4:e00609.
  64. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Persuasiveness of Statistics and Patients’ and Mothers’ Narratives in Human Papillomavirus Vaccine Recommendation Messages: A Randomized Controlled Study in Japan. Frontiers in Public Health. 2018;6:105.
  65. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Japanese anti- versus pro-influenza vaccination websites: a text mining analysis. Health Promotion International. day015, 2018
  66. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. How to attract interest in health materials: lessons from psychological studies. Health. 2018;10(4):422-433.
  67. Ishikawa H.,Yamaguchi I., Nutbeam D., Kato M., Okuhara T., Okada M., Kiuchi T. Improving health literacy in a Japanese community population: A pilot study to develop an educational program. Health Expectations 21(4):814-821, 2018
  68. Kato, M., Ono, N., Ishikawa, H., Okuhara, T., Okada, M., & Kiuchi, T. Lessons learned from previous environmental health crises: Narratives of patients with Minamata disease in TV documentaries as the main media outlet. Cogent Arts & Humanities, 5(1), 1447780.
  69. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Beliefs underlying messages of anti-cancer-screening websites in Japan: a qualitative analysis. Asian Pacific Journal of Cancer Prevention. 2017;19(2):427-433.
  70. Goto E., Ishikawa H., Okuhara T., Okada M., Kato M., Kiuchi T. Factors associated with adherence to recommendations to visit a physician after annual health checkups among Japanese employees: a cross-sectional observational study. Industrial Health. 56(2): 155-159, 2018.
  71. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Contents of Japanese pro- and anti-HPV vaccination websites: A text mining analysis. Patient Education and Counseling. 2017;101(3):406-413.
  72. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Readability comparison of pro- and anti-HPV-vaccination online messages in Japan. Patient Education and Counseling. 2017; 10(10): 1859-1866.
  73. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Designing persuasive health materials using processing fluency: a literature review. BMC Research Notes. 2017; 10:198.
  74. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Assertions of Japanese Websites for and Against Cancer Screening: a Text Mining Analysis. Asian Pacific Journal of Cancer Prevention. 2017; 18(4): 1069-1075.
  75. Kato M., Ishikawa H., Okuhara T., Okada M., Kiuchi T. Mapping research on health topics presented in prime-time TV dramas in ‘developed’ countries: A literature review. Cogent Social Science. 2017; 3(1).
  76. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. A readability comparison of anti- versus pro-influenza vaccination online messages in Japan. Preventive Medicine Reports. 2017; 6: 47-52.
  77. Okuhara T., Ishikawa H., Okada M., Kato M., Kiuchi T. Readability comparison of pro- and anti-cancer screening online messages in Japan. Asian Pacific Journal of Cancer Prevention. 2017; 17(12): 6137-6142.
  78. Hosokawa C., Ishikawa H., Okada M., Kato M., Okuhara T., Kiuchi T. The relationship of gender role orientation with health literacy and self-efficacy for healthy eating among Japanese workers in early adulthood. Frontiers in Nutrition. 2016; 3(17).
  79. Okuhara T., Ishikawa H., Okada H., Kiuchi T. Readability, suitability, and health content assessment of cancer screening announcements in municipal newsletters in Japan. Asian Pacific Journal of Cancer Prevention. 2015; 16 (15): 6719-27.
  80. Okuhara T., Ishikawa H., Okada H., Kiuchi T. Identification of gain- and loss-framed cancer screening messages that appeared in municipal newsletters in Japan. BMC Research Notes. 2014; 7(1): 896.

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