{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T06:43:54Z","timestamp":1790232234822,"version":"4.1.0"},"reference-count":25,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T00:00:00Z","timestamp":1760400000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T00:00:00Z","timestamp":1760400000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["DEN Open"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>Sigmoid volvulus (SV) is rare in Japan, and most studies have been limited to small numbers or case series reports. We aimed to explore the incidence, risk factors, and recurrence rates of SV in Japan using community\u2010based health insurance claims data.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We used health insurance claims data from the Toyama Prefecture from April 2018 to March 2022. Individuals aged \u2265 40 years who had no diagnosis of SV (International Statistical Classification of Diseases, 10th Revision) in 2018 were included in our study. Patients who were newly diagnosed with SV in 2019 were identified. The annual incidence, risk factors, and recurrence rates of SV within 2 years of the first endoscopic reduction were evaluated. Poisson regression analysis was employed to identify risk factors, and Kaplan\u2013Meier analysis was performed to analyze recurrence.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Of the 327,693 insured individuals in Toyama, 52 developed SV in 2019 (0.0159% = 15.9\/100,000). Men (adjusted rate ratio [aRR] = 3.46, 95% confidence interval [CI]: 1.92\u2013 6.25), constipation (aRR = 4.63, 95% CI: 2.50\u20138.58), and higher disability levels (level 2\u20133: aRR = 6.54, 95% CI: 2.43\u201313.57, level 4\u20135: RR = 2.94, 95% CI: 1.10\u20137.84) were significantly associated with SV incidence. Of the 45 patients who underwent only endoscopic reduction, recurrence within 2 years was observed in 16 (cumulative recurrence rate, 35.6%).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>SV is common in community\u2010based studies. Men, constipation, and a high disability level were risk factors. The recurrence rate of SV after endoscopic reduction was approximately 35% within 2 years. Our insurance claims data offered valuable insights into SV epidemiology.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/deo2.70212","type":"journal-article","created":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T16:39:56Z","timestamp":1760459996000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Epidemiology and Recurrence of Sigmoid Volvulus: Analysis of Health Insurance Claims Data in Japan"],"prefix":"10.1002","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8615-5924","authenticated-orcid":false,"given":"Masaaki","family":"Yamada","sequence":"first","affiliation":[{"name":"Department of Epidemiology and Health Policy School of Medicine University of Toyama  Toyama Japan"},{"name":"Department of Gastroenterology Shinseikai Toyama Hospital  Imizu Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michikazu","family":"Sekine","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Health Policy School of Medicine University of Toyama  Toyama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haruka","family":"Fujinami","sequence":"additional","affiliation":[{"name":"Department of Endoscopy Toyama University Hospital  Toyama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuchi","family":"Motofuji","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Shinseikai Toyama Hospital  Imizu Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eiji","family":"Shinno","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology Shinseikai Toyama Hospital  Imizu Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,10,14]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1186\/s13017-023-00502-x"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1463-1318.2010.02262.x"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.giec.2006.01.010"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/00000658-198507000-00014"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/SLA.0b013e31828c88ac"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10350-006-0821-x"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/codi.16849"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dld.2018.10.003"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/deo2.299"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.7223\/apjdm.6.55"},{"key":"e_1_2_12_12_1","unstructured":"Ministry of Health Labour and Welfare in Japan.Long\u2010term Care Insurance in Japan. (2002) https:\/\/www.mhlw.go.jp\/english\/topics\/elderly\/care\/."},{"key":"e_1_2_12_13_1","unstructured":"Toyama Statistics World.Population Survey in 2019. (in Japanese) https:\/\/www.pref.toyama.jp\/sections\/1015\/lib\/jinko\/index_r01.html."},{"key":"e_1_2_12_14_1","unstructured":"Ministry of Health Labour and Welfare in Japan Division of the Health for the Elderly.System and procedure of Long\u2010term Care Need Certification. (in Japanese) https:\/\/www.mhlw.go.jp\/file\/05\u2010Shingikai\u201011901000\u2010Koyoukintoujidoukateikyoku\u2010Soumuka\/0000126240.pdf."},{"key":"e_1_2_12_15_1","unstructured":"Statistica.Share of Old Age Population (65 Years and Older) in the Total U.S. Population From 1950 to 2050 https:\/\/www.statista.com\/statistics\/457822\/share\u2010of\u2010old\u2010age\u2010population\u2010in\u2010the\u2010total\u2010us\u2010population\/."},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.1787\/4dd50c09-en"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.2169\/internalmedicine.45.1643"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.asjsur.2021.04.004"},{"key":"e_1_2_12_19_1","first-page":"859","article-title":"Clinical Study of Sigmoid Volvulus at Eleven Core Hospitals in the Kagawa Prefecture","volume":"118","author":"Wato M.","year":"2021","journal-title":"Journal of Japanese Society of Gastroenterology"},{"key":"e_1_2_12_20_1","doi-asserted-by":"publisher","DOI":"10.5009\/gnl19108"},{"key":"e_1_2_12_21_1","doi-asserted-by":"publisher","DOI":"10.5217\/ir.2017.15.2.215"},{"key":"e_1_2_12_22_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00423-022-02428-5"},{"key":"e_1_2_12_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/codi.13972"},{"key":"e_1_2_12_24_1","doi-asserted-by":"publisher","DOI":"10.1111\/J.1445\u20102197.2012.06182.X"},{"key":"e_1_2_12_25_1","doi-asserted-by":"publisher","DOI":"10.1186\/S12893\u2010022\u201001549\u20104"},{"key":"e_1_2_12_26_1","doi-asserted-by":"publisher","DOI":"10.1787\/242e3c8c-en"}],"container-title":["DEN Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/deo2.70212","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/deo2.70212","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/deo2.70212","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T13:57:45Z","timestamp":1790171865000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/deo2.70212"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,10,14]]},"references-count":25,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2026,4]]}},"alternative-id":["10.1002\/deo2.70212"],"URL":"https:\/\/doi.org\/10.1002\/deo2.70212","archive":["Portico"],"relation":{},"ISSN":["2692-4609","2692-4609"],"issn-type":[{"value":"2692-4609","type":"print"},{"value":"2692-4609","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,10,14]]},"assertion":[{"value":"2025-05-28","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-09-19","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-10-14","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70212"}}