Regional disparities in suicide among patients with cancer: A nationwide population‐based study in Japan

Abstract Background This study aimed to explore prefecture‐level differences in suicide risk among patients with cancer in Japan. Methods Data from the National Cancer Registry, which covers the entire Japanese population, were used. Patients diagnosed with cancer between 2016 and 2017 were included...

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Main Authors: Ken Kurisu, Saki Harashima, Maiko Fujimori, Tatsuo Akechi, Kazuhiro Yoshiuchi, Yosuke Uchitomi
Format: Article
Language:English
Published: Wiley 2023-10-01
Series:Cancer Medicine
Subjects:
Online Access:https://doi.org/10.1002/cam4.6574
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author Ken Kurisu
Saki Harashima
Maiko Fujimori
Tatsuo Akechi
Kazuhiro Yoshiuchi
Yosuke Uchitomi
author_facet Ken Kurisu
Saki Harashima
Maiko Fujimori
Tatsuo Akechi
Kazuhiro Yoshiuchi
Yosuke Uchitomi
author_sort Ken Kurisu
collection DOAJ
description Abstract Background This study aimed to explore prefecture‐level differences in suicide risk among patients with cancer in Japan. Methods Data from the National Cancer Registry, which covers the entire Japanese population, were used. Patients diagnosed with cancer between 2016 and 2017 were included. The standardized mortality ratio (SMR) for suicide within 2 years after cancer diagnosis was quantified compared with the general population for each prefecture. Multivariate Poisson regression analysis was conducted to quantify the adjusted relative risk using Hokkaido as the reference. Results The analysis included 2,133,502 patients. The SMRs were high among patients with cancer residing in certain prefectures, such as the Hokuriku region (the middle and western parts of Japan's main island). These areas also exhibited a significant relative risk in the Poisson regression model. Conclusion The results demonstrated that patients with cancer in certain prefectures in Japan have a high suicide risk.
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spelling doaj.art-9b2f20a4f39c48d38e10b65fbe7936cd2023-10-20T10:25:45ZengWileyCancer Medicine2045-76342023-10-011219200522005810.1002/cam4.6574Regional disparities in suicide among patients with cancer: A nationwide population‐based study in JapanKen Kurisu0Saki Harashima1Maiko Fujimori2Tatsuo Akechi3Kazuhiro Yoshiuchi4Yosuke Uchitomi5Division of Survivorship Research National Cancer Center Institute for Cancer Control Tokyo JapanDivision of Survivorship Research National Cancer Center Institute for Cancer Control Tokyo JapanDivision of Survivorship Research National Cancer Center Institute for Cancer Control Tokyo JapanDepartment of Psychiatry and Cognitive‐Behavioral Medicine Nagoya City University, Graduate School of Medical Sciences Nagoya JapanDepartment of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine The University of Tokyo Tokyo JapanDivision of Survivorship Research National Cancer Center Institute for Cancer Control Tokyo JapanAbstract Background This study aimed to explore prefecture‐level differences in suicide risk among patients with cancer in Japan. Methods Data from the National Cancer Registry, which covers the entire Japanese population, were used. Patients diagnosed with cancer between 2016 and 2017 were included. The standardized mortality ratio (SMR) for suicide within 2 years after cancer diagnosis was quantified compared with the general population for each prefecture. Multivariate Poisson regression analysis was conducted to quantify the adjusted relative risk using Hokkaido as the reference. Results The analysis included 2,133,502 patients. The SMRs were high among patients with cancer residing in certain prefectures, such as the Hokuriku region (the middle and western parts of Japan's main island). These areas also exhibited a significant relative risk in the Poisson regression model. Conclusion The results demonstrated that patients with cancer in certain prefectures in Japan have a high suicide risk.https://doi.org/10.1002/cam4.6574cancergeographical inequalityprefectureregional disparitiessuicide
spellingShingle Ken Kurisu
Saki Harashima
Maiko Fujimori
Tatsuo Akechi
Kazuhiro Yoshiuchi
Yosuke Uchitomi
Regional disparities in suicide among patients with cancer: A nationwide population‐based study in Japan
Cancer Medicine
cancer
geographical inequality
prefecture
regional disparities
suicide
title Regional disparities in suicide among patients with cancer: A nationwide population‐based study in Japan
title_full Regional disparities in suicide among patients with cancer: A nationwide population‐based study in Japan
title_fullStr Regional disparities in suicide among patients with cancer: A nationwide population‐based study in Japan
title_full_unstemmed Regional disparities in suicide among patients with cancer: A nationwide population‐based study in Japan
title_short Regional disparities in suicide among patients with cancer: A nationwide population‐based study in Japan
title_sort regional disparities in suicide among patients with cancer a nationwide population based study in japan
topic cancer
geographical inequality
prefecture
regional disparities
suicide
url https://doi.org/10.1002/cam4.6574
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