Kyohei Hayashi

1.8k total citations
37 papers, 1.4k citations indexed

About

Kyohei Hayashi is a scholar working on Surgery, Epidemiology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Kyohei Hayashi has authored 37 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Surgery, 7 papers in Epidemiology and 7 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Kyohei Hayashi's work include Nutritional Studies and Diet (6 papers), Eosinophilic Esophagitis (5 papers) and Helicobacter pylori-related gastroenterology studies (4 papers). Kyohei Hayashi is often cited by papers focused on Nutritional Studies and Diet (6 papers), Eosinophilic Esophagitis (5 papers) and Helicobacter pylori-related gastroenterology studies (4 papers). Kyohei Hayashi collaborates with scholars based in Japan, Russia and Germany. Kyohei Hayashi's co-authors include Kotaro Ozasa, Yoshiyuki Watanabe, Akiko Tamakoshi, Tsuneharu Miki, Fumio Sakauchi, Kenji Wakai, Mitsuru Mori, Kazuya Mikami, Masakazu Washio and Masahiro Nakao and has published in prestigious journals such as Cancer Research, American Journal of Epidemiology and The Journal of Urology.

In The Last Decade

Kyohei Hayashi

33 papers receiving 1.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Kyohei Hayashi Japan	18	359	328	234	213	193	37	1.4k
Edoardo Guastamacchia Italy	26	993 2.8×	303 0.9×	372 1.6×	117 0.5×	148 0.8×	123	2.2k
Leon Fogelfeld United States	21	786 2.2×	238 0.7×	193 0.8×	242 1.1×	205 1.1×	69	1.5k
R. Fagard Belgium	23	474 1.3×	406 1.2×	359 1.5×	75 0.4×	89 0.5×	78	2.7k
Houxun Xing China	24	325 0.9×	209 0.6×	362 1.5×	37 0.2×	180 0.9×	63	1.7k
Takuo Hirose Japan	30	573 1.6×	406 1.2×	428 1.8×	91 0.4×	125 0.6×	135	2.7k
Tamara S. Hannon United States	17	365 1.0×	160 0.5×	249 1.1×	120 0.6×	82 0.4×	52	1.5k
Mohsen Afarideh Iran	23	363 1.0×	161 0.5×	240 1.0×	35 0.2×	281 1.5×	64	1.5k
Beatrice Roitman-Johnson United States	9	157 0.4×	270 0.8×	158 0.7×	136 0.6×	382 2.0×	12	1.6k
Tinh‐Hai Collet Switzerland	23	925 2.6×	139 0.4×	225 1.0×	236 1.1×	150 0.8×	84	1.9k
Jean-Louis Schlienger France	21	636 1.8×	249 0.8×	250 1.1×	93 0.4×	181 0.9×	118	1.6k

Countries citing papers authored by Kyohei Hayashi

Since Specialization

Citations

This map shows the geographic impact of Kyohei Hayashi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Kyohei Hayashi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kyohei Hayashi more than expected).

Fields of papers citing papers by Kyohei Hayashi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kyohei Hayashi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Kyohei Hayashi. The network helps show where Kyohei Hayashi may publish in the future.

Co-authorship network of co-authors of Kyohei Hayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Kyohei Hayashi. A scholar is included among the top collaborators of Kyohei Hayashi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Kyohei Hayashi. Kyohei Hayashi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Washio, Masakazu, Mitsuru Mori, Fumio Sakauchi, et al.. (2007). Diabetes mellitus and kidney cancer risk: The results of Japan Collaborative Cohort Study for Evaluation of Cancer Risk (JACC Study). International Journal of Urology. 14(5). 393–397. 43 indexed citations

Kubo, Tatsuhiko, Kotaro Ozasa, Kazuya Mikami, et al.. (2006). Prospective Cohort Study of the Risk of Prostate Cancer among Rotating-Shift Workers: Findings from the Japan Collaborative Cohort Study. American Journal of Epidemiology. 164(6). 549–555. 314 indexed citations

Suzuki, Kazuo, et al.. (2005). Stroke subtypes and lesion sites in Akita, Japan. Journal of Stroke and Cerebrovascular Diseases. 14(1). 1–7. 16 indexed citations

Ozasa, Kotaro, Masahiro Nakao, Yoshiyuki Watanabe, et al.. (2005). Association of Serum Phytoestrogen Concentration and Dietary Habits in a Sample Set of the JACC Study. Journal of Epidemiology. 15(Supplement_II). S196–S202. 38 indexed citations

Ozasa, Kotaro, Masahiro Nakao, Yoshiyuki Watanabe, et al.. (2004). Serum phytoestrogens and prostate cancer risk in a nested case‐control study among Japanese men. Cancer Science. 95(1). 65–71. 125 indexed citations

Sakauchi, Fumio, Mitsuru Mori, Masakazu Washio, et al.. (2004). Dietary Habits and Risk of Urothelial Cancer Death in a Large-Scale Cohort Study (JACC Study) in Japan. Nutrition and Cancer. 50(1). 33–39. 13 indexed citations

Nakagawa, Yoshio, et al.. (2004). Relationship Between Abdominal Visceral Fat and Lacunar Infarcts in Japanese Men. Circulation Journal. 68(11). 982–987. 11 indexed citations

Ozasa, Kotaro, et al.. (2002). Various S-GOT/S-GPT Ratios in Nonviral Liver Disorders and Related Physical Conditions and Life-Style. Digestive Diseases and Sciences. 47(3). 549–555. 37 indexed citations

Watanabe, Yoshiyuki, et al.. (2002). Validity of sonographic screening for the detection of abdominal cancers. Journal of Clinical Ultrasound. 30(7). 408–415. 13 indexed citations

10.

Hatta, Hiroyuki, Akane Higashi, Kotaro Ozasa, et al.. (1998). A Validation of the Hospital Anxiety and Depression Scale.. 38(5). 309–315. 85 indexed citations

11.

Habu, Yasuki, Hideto Inokuchi, Keisuke Kiyota, et al.. (1998). Economic evaluation of Helicobacter pylori eradication for the treatment of duodenal ulcer disease in Japan: A decision analysis to assess eradication strategy in comparison with a conventional strategy. Journal of Gastroenterology and Hepatology. 13(3). 280–287. 5 indexed citations

12.

Ozasa, Kotaro, et al.. (1997). Validity of Self-Reported Passive Smoking Evaluated by Comparison with Smokers in the Same Household. Journal of Epidemiology. 7(4). 205–209. 13 indexed citations

13.

Ohtani‐Fujita, Naoko, Thaddeus P. Dryja, Tsuyoshi Fujita, et al.. (1997). Hypermethylation in the retinoblastoma gene is associated with unilateral, sporadic retinoblastoma. Cancer Genetics and Cytogenetics. 98(1). 43–49. 111 indexed citations

14.

Watanabe, Yoshiyuki, Kotaro Ozasa, Akane Higashi, et al.. (1997). Helicobacter pylori Infection and Atrophic Gastritis. Journal of Clinical Gastroenterology. 25(1). 391–394. 34 indexed citations

15.

Ozasa, Kotaro, et al.. (1997). Validity of observed differences in dietary surveys by two self-administered questionnaires over a 5-year period: Concordance with self-reported change. Environmental Health and Preventive Medicine. 2(2). 85–88. 1 indexed citations

16.

Shimouchi, Akira, et al.. (1996). Effects of infant mortality, family planning and socioeconomic factors on fertility reduction in developing countries. Environmental Health and Preventive Medicine. 1(1). 39–43. 3 indexed citations

17.

Shimouchi, Akira, Kotaro Ozasa, & Kyohei Hayashi. (1994). Immunization Coverage and Infant Mortality Rate in Developing Countries. Asia Pacific Journal of Public Health. 7(4). 228–232. 17 indexed citations

18.

Ozasa, Kotaro, Akane Higashi, Yoshiyuki Watanabe, et al.. (1993). Comparison of a Rural Town and a Fishing Town: Diet and Circulatory System Diseases.. Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene). 48(4). 830–837. 1 indexed citations

19.

Watanabe, Yoshiyuki, Masahiro Tada, Kyohei Hayashi, et al.. (1984). 日本の大腸がんに関する疫学的考察ＩＩ直腸がん・結腸がんの背景因子に関する症例・対照研究:(2) 直腸癌•結腸癌の背景因子に関する症例•対照研究. 81(2). 185–193. 14 indexed citations

20.

Misaki, F., Kyohei Hayashi, Yoshiyuki Watanabe, & Keiichi Kawai. (1983). [An epidemiological study on risk factors in peptic ulcer].. PubMed. 80(12). 2504–11. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact