Hirofumi Oyama

1.2k total citations
19 papers, 730 citations indexed

About

Hirofumi Oyama is a scholar working on Clinical Psychology, Social Psychology and Health. According to data from OpenAlex, Hirofumi Oyama has authored 19 papers receiving a total of 730 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Clinical Psychology, 15 papers in Social Psychology and 6 papers in Health. Recurrent topics in Hirofumi Oyama's work include Suicide and Self-Harm Studies (15 papers), Mental Health Treatment and Access (15 papers) and Health disparities and outcomes (6 papers). Hirofumi Oyama is often cited by papers focused on Suicide and Self-Harm Studies (15 papers), Mental Health Treatment and Access (15 papers) and Health disparities and outcomes (6 papers). Hirofumi Oyama collaborates with scholars based in Japan, Sweden and Australia. Hirofumi Oyama's co-authors include Tomoe Sakashita, Brian Draper, Yeates Conwell, Annette Erlangsen, Diego De Leo, Sylvie Lapierre, Margda Wærn, Paul Quinnett, Yutaka Ono and Masahiro Goto and has published in prestigious journals such as Psychological Medicine, The Journal of Nervous and Mental Disease and Social Psychiatry and Psychiatric Epidemiology.

In The Last Decade

Hirofumi Oyama

18 papers receiving 682 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hirofumi Oyama Japan 11 595 402 193 144 101 19 730
Paul Quinnett United States 11 623 1.0× 366 0.9× 106 0.5× 118 0.8× 99 1.0× 16 707
Christopher R. DeCou United States 15 733 1.2× 230 0.6× 152 0.8× 113 0.8× 118 1.2× 41 907
Sungeun You South Korea 14 544 0.9× 171 0.4× 117 0.6× 132 0.9× 91 0.9× 43 698
Saška Roškar Slovenia 14 499 0.8× 286 0.7× 93 0.5× 95 0.7× 76 0.8× 34 624
David Althaus Germany 10 597 1.0× 375 0.9× 78 0.4× 116 0.8× 106 1.0× 26 714
Jerneja Svetičič Australia 14 603 1.0× 241 0.6× 131 0.7× 117 0.8× 75 0.7× 31 730
Itxaso Alayo Spain 9 617 1.0× 206 0.5× 92 0.5× 119 0.8× 68 0.7× 13 758
Catalina González‐Forteza Mexico 17 563 0.9× 334 0.8× 86 0.4× 200 1.4× 44 0.4× 70 784
Claire Coffey Ireland 11 506 0.9× 306 0.8× 100 0.5× 133 0.9× 72 0.7× 17 690
Nancy Gebler United States 6 404 0.7× 178 0.4× 125 0.6× 121 0.8× 51 0.5× 7 583

Countries citing papers authored by Hirofumi Oyama

Since Specialization
Citations

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

Fields of papers citing papers by Hirofumi Oyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hirofumi Oyama

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

All Works

19 of 19 papers shown
1.
Sakashita, Tomoe & Hirofumi Oyama. (2022). Suicide Prevention Interventions and Their Linkages in Multilayered Approaches for Older Adults: A Review and Comparison. Frontiers in Public Health. 10. 842193–842193. 7 indexed citations
2.
Sakashita, Tomoe & Hirofumi Oyama. (2019). Developing a Hypothetical Model for Suicide Progression in Older Adults With Universal, Selective, and Indicated Prevention Strategies. Frontiers in Psychiatry. 10. 161–161. 17 indexed citations
3.
Oyama, Hirofumi & Tomoe Sakashita. (2017). Community-based screening intervention for depression affects suicide rates among middle-aged Japanese adults. Psychological Medicine. 47(8). 1500–1509. 9 indexed citations
4.
Sakashita, Tomoe & Hirofumi Oyama. (2015). Overview of community-based studies of depression screening interventions among the elderly population in Japan. Aging & Mental Health. 20(2). 231–239. 8 indexed citations
5.
Oyama, Hirofumi & Tomoe Sakashita. (2015). Long-Term Effects of a Screening Intervention for Depression on Suicide Rates among Japanese Community-Dwelling Older Adults. American Journal of Geriatric Psychiatry. 24(4). 287–296. 19 indexed citations
6.
Oyama, Hirofumi & Tomoe Sakashita. (2014). Effects of Universal Screening for Depression Among Middle-Aged Adults in a Community With a High Suicide Rate. The Journal of Nervous and Mental Disease. 202(4). 280–286. 3 indexed citations
7.
Sakamoto, Shinji, et al.. (2014). The effects of suicide prevention measures reported through a psychoeducational video: A practice in Japan. International Journal of Social Psychiatry. 60(8). 751–758. 6 indexed citations
8.
Oyama, Hirofumi & Tomoe Sakashita. (2013). Differences in specific depressive symptoms among community-dwelling middle-aged Japanese adults before and after a universal screening intervention. Social Psychiatry and Psychiatric Epidemiology. 49(2). 251–258. 2 indexed citations
9.
Erlangsen, Annette, Merete Nordentoft, Yeates Conwell, et al.. (2011). Key Considerations for Preventing Suicide in Older Adults. Crisis. 32(2). 106–109. 58 indexed citations
10.
Lapierre, Sylvie, Annette Erlangsen, Margda Wærn, et al.. (2011). A Systematic Review of Elderly Suicide Prevention Programs. Crisis. 32(2). 88–98. 225 indexed citations
11.
Oyama, Hirofumi, Tomoe Sakashita, Naoki Watanabe, et al.. (2010). A Community-Based Survey and Screening for Depression in the Elderly. Crisis. 31(2). 100–108. 17 indexed citations
12.
Oyama, Hirofumi, Naoki Watanabe, Yutaka Ono, & Tomoe Sakashita. (2008). [Community-based suicide prevention through group activity for the elderly successfully reduced the high suicide rate for females].. PubMed. 110(9). 731–8. 1 indexed citations
13.
Oyama, Hirofumi, et al.. (2008). Effect of Community-based Intervention Using Depression Screening on Elderly Suicide Risk: A Meta-analysis of the Evidence from Japan. Community Mental Health Journal. 44(5). 311–320. 68 indexed citations
14.
Kondo, Tsuyoshi, et al.. (2006). Stress buffering effects of social support on depressive symptoms in middle age: Reciprocity and community mental health. Psychiatry and Clinical Neurosciences. 60(6). 652–661. 78 indexed citations
15.
Oyama, Hirofumi, Yutaka Ono, Naoki Watanabe, et al.. (2006). Local community intervention through depression screening and group activity for elderly suicide prevention. Psychiatry and Clinical Neurosciences. 60(1). 110–114. 36 indexed citations
16.
Oyama, Hirofumi, et al.. (2006). Preventing Elderly Suicide Through Primary Care by Community-Based Screening for Depression in Rural Japan. Crisis. 27(2). 58–65. 41 indexed citations
17.
Oyama, Hirofumi, Naoki Watanabe, Yutaka Ono, et al.. (2005). Community‐based suicide prevention through group activity for the elderly successfully reduced the high suicide rate for females. Psychiatry and Clinical Neurosciences. 59(3). 337–344. 73 indexed citations
18.
Oyama, Hirofumi, et al.. (2004). Community-Based Prevention for Suicide in Elderly by Depression Screening and Follow-Up. Community Mental Health Journal. 40(3). 249–263. 61 indexed citations
19.
Watanabe, Naoki, et al.. (2004). Mental health promotion as suicide prevention. Geriatrics and gerontology international. 4(s1). 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.

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