Ichiro Kai

4.1k total citations · 1 hit paper
115 papers, 3.0k citations indexed

About

Ichiro Kai is a scholar working on General Health Professions, Public Health, Environmental and Occupational Health and Health. According to data from OpenAlex, Ichiro Kai has authored 115 papers receiving a total of 3.0k indexed citations (citations by other indexed papers that have themselves been cited), including 49 papers in General Health Professions, 27 papers in Public Health, Environmental and Occupational Health and 26 papers in Health. Recurrent topics in Ichiro Kai's work include Health disparities and outcomes (26 papers), Palliative Care and End-of-Life Issues (17 papers) and Intergenerational Family Dynamics and Caregiving (16 papers). Ichiro Kai is often cited by papers focused on Health disparities and outcomes (26 papers), Palliative Care and End-of-Life Issues (17 papers) and Intergenerational Family Dynamics and Caregiving (16 papers). Ichiro Kai collaborates with scholars based in Japan, United States and Australia. Ichiro Kai's co-authors include Miyako Takahashi, Tami Saito, Hiroaki Miyata, Hom Nath Chalise, Akira Akabayashi, Kenji Toba, Yasuyoshi Ouchi, Hideki Ito, Hidenori Arai and Masahiro Akishita and has published in prestigious journals such as The Lancet, Journal of Clinical Oncology and Cancer.

In The Last Decade

Ichiro Kai

111 papers receiving 2.8k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Redefining the elderly as aged 75 years and older: Proposal from the Joint Committee of Japan Gerontological Society and the Japan Geriatrics Society

2017 345 citations Ichiro Kai et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ichiro Kai Japan	33	1.1k	766	711	440	382	115	3.0k
Irena Cenzer United States	28	1.1k 0.9×	538 0.7×	1.0k 1.5×	312 0.7×	315 0.8×	79	3.4k
Morag Farquhar United Kingdom	36	1.3k 1.2×	1.6k 2.1×	571 0.8×	407 0.9×	197 0.5×	145	4.1k
Stéphane Cullati Switzerland	29	905 0.8×	461 0.6×	628 0.9×	281 0.6×	158 0.4×	159	2.5k
Siegfried Geyer Germany	29	1.7k 1.5×	575 0.8×	962 1.4×	347 0.8×	196 0.5×	181	3.8k
Eleonora d’Orsi Brazil	32	1.3k 1.1×	623 0.8×	702 1.0×	315 0.7×	293 0.8×	175	3.5k
Mary R. Janevic United States	27	930 0.8×	365 0.5×	490 0.7×	638 1.4×	485 1.3×	87	2.6k
A. Bowling United Kingdom	31	1.2k 1.0×	306 0.4×	779 1.1×	295 0.7×	267 0.7×	54	3.1k
Mildred Ramírez United States	36	1000 0.9×	1.1k 1.4×	376 0.5×	363 0.8×	577 1.5×	144	5.8k
Clarann Weinert United States	31	1.6k 1.4×	463 0.6×	695 1.0×	631 1.4×	248 0.6×	93	3.2k
Mogens Trab Damsgaard Denmark	31	1.2k 1.0×	654 0.9×	774 1.1×	330 0.8×	317 0.8×	81	3.5k

Countries citing papers authored by Ichiro Kai

Since Specialization

Citations

This map shows the geographic impact of Ichiro Kai'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 Ichiro Kai with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ichiro Kai more than expected).

Fields of papers citing papers by Ichiro Kai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ichiro Kai. 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 Ichiro Kai. The network helps show where Ichiro Kai may publish in the future.

Co-authorship network of co-authors of Ichiro Kai

This figure shows the co-authorship network connecting the top 25 collaborators of Ichiro Kai. A scholar is included among the top collaborators of Ichiro Kai 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 Ichiro Kai. Ichiro Kai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Fujihara, Satoko, Taishi Tsuji, Takeshi Nakagawa, et al.. (2025). Effect of Self‐Quantification on Caregiver Burden and Depression Among Family Caregivers: A SWING ‐Japan Study. Psychogeriatrics. 25(4). e70053–e70053.

Fujihara, Satoko, et al.. (2024). Participation factors in a self-quantification program for family caregivers of community-dwelling older adults with long-term care in Japan. BMC Research Notes. 17(1). 388–388. 1 indexed citations

Yokokawa, Yoshiharu, et al.. (2017). Activities of daily living (ADL) of single elderly individuals using social assistive programs in a rural community.. PubMed. 64(6). 330–336. 1 indexed citations

Kai, Ichiro, et al.. (2016). The Relationship Between the Means of Communication and a Self-Help Group for Laryngectomized Patients.

Agree, Emily M., et al.. (2016). Disaster Preparedness Among Older Japanese Adults With Long-Term Care Needs and Their Family Caregivers. Disaster Medicine and Public Health Preparedness. 11(1). 31–38. 32 indexed citations

Saito, Tami, et al.. (2012). Effects of home, outside leisure, social, and peer activity on psychological health among Japanese family caregivers. Aging & Mental Health. 16(4). 500–506. 31 indexed citations

Aita, Kaoruko & Ichiro Kai. (2009). Withdrawal of mechanical ventilation from dying patients at emergency and critical care facilities in Japan: a qualitative study with physicians. Nihon Kyukyu Igakukai Zasshi Journal of Japanese Association for Acute Medicine. 20(1). 16–30. 4 indexed citations

Watanabe, Chie, Miyako Takahashi, & Ichiro Kai. (2007). [Hematologist practices and attitude toward chemotherapy-related infertility].. PubMed. 34(6). 891–6. 5 indexed citations

Suzukamo, Yoshimi, et al.. (2006). Importance of Formal Support for the Patients after Laryngectomy-An Analysis of Participants in Self Help Groups. Journal of Japan Academy of Nursing Science. 26(4). 46–54. 2 indexed citations

10.

Takahashi, Miyako, Ichiro Kai, Mitsuru Hisata, & Yasuhiro Higashi. (2006). The Association between Breast Surgeonsʼ Attitudes toward Breast Reconstruction and Their Reconstruction-Related Information-Giving Behaviors: A Nationwide Survey in Japan. Plastic & Reconstructive Surgery. 118(7). 1507–1514. 23 indexed citations

11.

Takahashi, Miyako & Ichiro Kai. (2005). Sexuality after breast cancer treatment: Changes and coping strategies among Japanese survivors. Social Science & Medicine. 61(6). 1278–1290. 63 indexed citations

12.

Kai, Ichiro, et al.. (2004). Applicability of a Modified the Nottingham Adjustment Scale-Japan to the Patients after Laryngectomy. Journal of Japan Academy of Nursing Science. 24(1). 53–59. 4 indexed citations

13.

Ishizaki, Tatsuro, Ichiro Kai, Yasuki Kobayashi, Yutaka Matsuyama, & Yuichi Imanaka. (2004). The effect of aging on functional decline among older Japanese living in a community: a 5-year longitudinal data analysis. Aging Clinical and Experimental Research. 16(3). 233–239. 24 indexed citations

14.

Akabayashi, Akira, Brian Taylor Slingsby, & Ichiro Kai. (2003). Perspectives on advance directives in Japanese society: A population-based questionnaire survey. BMC Medical Ethics. 4(1). E5–E5. 61 indexed citations

15.

Kim, Hye Kyung, et al.. (2000). Social support exchange and quality of life among the Korean elderly. Journal of Cross-Cultural Gerontology. 15(4). 331–347. 66 indexed citations

16.

Akabayashi, Akira & Ichiro Kai. (1999). Study of 5th-Year Medical Student Interest in Medical Ethics and Related Factors.. 30(2). 77–82.

17.

Honda, Teruko, Ichiro Kai, & Gen Ohi. (1999). Fat and dietary fiber intake and colon cancer mortality: A chronological comparison between Japan and the United States. Nutrition and Cancer. 33(1). 95–99. 29 indexed citations

18.

Akabayashi, Akira, et al.. (1998). Social and behavioral factors associated with condom use among female commercial sex workers (CSWs) in tarlac, the Philippines. Environmental Health and Preventive Medicine. 2(4). 167–171. 7 indexed citations

19.

Kai, Ichiro, et al.. (1995). Subjective Well-Being and It's Related Factors in Korean Rural Elderly. Journal of agricultural medicine and community health. 20(2). 121–131. 1 indexed citations

20.

Ishizaki, Tatsuro, et al.. (1995). Factors Influencing Users' Return Home on Discharge from a Geriatric Intermediate Care Facility in Japan. Journal of the American Geriatrics Society. 43(6). 623–626. 14 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.

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