{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T22:35:52Z","timestamp":1789598152792,"version":"build-2803163510"},"reference-count":23,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T00:00:00Z","timestamp":1751414400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"},{"start":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T00:00:00Z","timestamp":1751414400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Geriatr"],"DOI":"10.1186\/s12877-025-06149-4","type":"journal-article","created":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T06:59:29Z","timestamp":1751439569000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Determinants of waiting times for surgery in older patients with hip fractures: a two-center retrospective study in Japanese acute care hospitals"],"prefix":"10.1186","volume":"25","author":[{"given":"Yunhan","family":"Ji","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takehiro","family":"Michikawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenta","family":"Zouchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kurenai","family":"Hachiya","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takumi","family":"Taniguchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keigo","family":"Sato","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"XiaoJian","family":"Ye","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mitsuhiro","family":"Morita","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nobuyuki","family":"Fujita","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,7,2]]},"reference":[{"key":"6149_CR1","doi-asserted-by":"publisher","first-page":"338","DOI":"10.1038\/nrendo.2014.51","volume":"10","author":"JA Cauley","year":"2014","unstructured":"Cauley JA, Chalhoub D, Kassem AM, Fuleihan Gel H. Geographic and ethnic disparities in osteoporotic fractures. Nat Rev Endocrinol. 2014;10:338\u201351.","journal-title":"Nat Rev Endocrinol"},{"key":"6149_CR2","doi-asserted-by":"publisher","first-page":"1369","DOI":"10.1016\/j.injury.2016.04.018","volume":"47","author":"CM Peeters","year":"2016","unstructured":"Peeters CM, Visser E, Van de Ree CL, Gosens T, Den Oudsten BL, De Vries J. Quality of life after hip fracture in the elderly: a systematic literature review. Injury. 2016;47:1369\u201382.","journal-title":"Injury"},{"key":"6149_CR3","doi-asserted-by":"publisher","first-page":"138","DOI":"10.5435\/JAAOS-D-14-00433","volume":"23","author":"KC Roberts","year":"2015","unstructured":"Roberts KC, Brox WT. AAOS clinical practice guideline: management of hip fractures in the elderly. J Am Acad Orthop Surg. 2015;23:138\u201340.","journal-title":"J Am Acad Orthop Surg"},{"key":"6149_CR4","doi-asserted-by":"publisher","first-page":"1333","DOI":"10.2106\/JBJS.O.00029","volume":"97","author":"AM Nyholm","year":"2015","unstructured":"Nyholm AM, Gromov K, Palm H, Brix M, Kallemose T, Troelsen A, et al. Time to surgery is associated with thirty-day and ninety-day mortality after proximal femoral fracture: a retrospective observational study on prospectively collected data from the Danish fracture database collaborators. J Bone Joint Surg Am. 2015;97:1333\u20139.","journal-title":"J Bone Joint Surg Am"},{"key":"6149_CR5","first-page":"606","volume":"38","author":"KL Anderson","year":"2009","unstructured":"Anderson KL, Koval KJ, Spratt KF. Hip fracture outcome: is there a July effect? Am J Orthop. 2009;38:606\u201311.","journal-title":"Am J Orthop"},{"key":"6149_CR6","doi-asserted-by":"publisher","first-page":"573","DOI":"10.1007\/s00068-017-0826-2","volume":"44","author":"ER Flikweert","year":"2018","unstructured":"Flikweert ER, Wendt KW, Diercks RL, Izaks GJ, Landsheer D, Stevens M, et al. Complications after hip fracture surgery: are they preventable? Eur J Trauma Emerg Surg. 2018;44:573\u201380.","journal-title":"Eur J Trauma Emerg Surg"},{"key":"6149_CR7","doi-asserted-by":"publisher","first-page":"1072","DOI":"10.1016\/j.arth.2013.10.021","volume":"29","author":"EL Steinberg","year":"2014","unstructured":"Steinberg EL, Sternheim A, Kadar A, Sagi Y, Sherer Y, Chechik O. Early operative intervention is associated with better patient survival in patients with intracapsular femur fractures but not with extracapsular fractures. J Arthroplasty. 2014;29:1072\u20135.","journal-title":"J Arthroplasty"},{"key":"6149_CR8","doi-asserted-by":"publisher","first-page":"111452","DOI":"10.1016\/j.injury.2024.111452","volume":"55","author":"N Yamamoto","year":"2024","unstructured":"Yamamoto N, Sawaguchi T, Matsushita T, Katoh N, Arai H, Shirahama M, et al. Fragility fracture network-Japan: the challenge of establishment of a National hip fracture database and successful achievement of nationwide health system change for hip fracture care in Japan. Injury. 2024;55:111452.","journal-title":"Injury"},{"key":"6149_CR9","doi-asserted-by":"publisher","first-page":"26","DOI":"10.1080\/17453674.2018.1545383","volume":"90","author":"EJA Wiegers","year":"2019","unstructured":"Wiegers EJA, Sewalt CA, Venema E, Schep NWL, Verhaar JAN, Lingsma HF, et al. The volume-outcome relationship for hip fractures: a systematic review and meta-analysis of 2,023,469 patients. Acta Orthop. 2019;90:26\u201332.","journal-title":"Acta Orthop"},{"key":"6149_CR10","doi-asserted-by":"publisher","first-page":"75","DOI":"10.1111\/ggi.15041","volume":"25","author":"Y Mori","year":"2025","unstructured":"Mori Y, Tarasawa K, Tanaka H, Mori N, Fushimi K, Aizawa T, et al. Limited impact of weekend admissions on hip fracture outcomes in elderly patients: a study from a Japanese nationwide medical claims database. Geriatr Gerontol Int. 2025;25:75\u201381.","journal-title":"Geriatr Gerontol Int"},{"key":"6149_CR11","unstructured":"Ministry of Health. Labour and Welfare. Novel Coronavirus (COVID-19). https:\/\/covid19.mhlw.go.jp\/en\/. Accessed 22 Mar 2025."},{"key":"6149_CR12","doi-asserted-by":"publisher","first-page":"230","DOI":"10.1186\/s12877-017-0621-2","volume":"17","author":"N Masnoon","year":"2017","unstructured":"Masnoon N, Shakib S, Kalisch-Ellett L, Caughey GE. What is polypharmacy? A systematic review of definitions. BMC Geriatr. 2017;17:230.","journal-title":"BMC Geriatr"},{"key":"6149_CR13","doi-asserted-by":"publisher","first-page":"37","DOI":"10.1186\/s13037-020-00262-6","volume":"14","author":"SM Abate","year":"2020","unstructured":"Abate SM, Mantefardo B, Basu B. Postoperative mortality among surgical patients with COVID-19: a systematic review and meta-analysis. Patient Saf Surg. 2020;14:37.","journal-title":"Patient Saf Surg"},{"key":"6149_CR14","doi-asserted-by":"publisher","first-page":"1006","DOI":"10.1186\/s12891-024-08050-4","volume":"25","author":"S Tanaka","year":"2024","unstructured":"Tanaka S, Osawa Y, Takegami Y, Okui N, Yamauchi K-ichi, Aoki Y, et al. Changes of hip fracture in older patients before and after the COVID-19 pandemic: a retrospective multicentre study in Japan. BMC Musculoskelet Disord. 2024;25:1006.","journal-title":"BMC Musculoskelet Disord"},{"key":"6149_CR15","doi-asserted-by":"publisher","first-page":"2371","DOI":"10.1007\/s00264-017-3639-3","volume":"41","author":"J Carow","year":"2017","unstructured":"Carow J, Carow JB, Coburn M, Kim B-S, B\u00fccking B, Bliemel C, et al. Mortality and cardiorespiratory complications in trochanteric femoral fractures: a ten year retrospective analysis. Int Orthop. 2017;41:2371\u201380.","journal-title":"Int Orthop"},{"key":"6149_CR16","doi-asserted-by":"publisher","first-page":"1616","DOI":"10.1111\/jgs.14243","volume":"64","author":"ES Oh","year":"2016","unstructured":"Oh ES, Sieber FE, Leoutsakos JM, Inouye SK, Lee HB. Sex differences in hip fracture surgery: preoperative risk factors for delirium and postoperative outcomes. J Am Geriatr Soc. 2016;64:1616\u201321.","journal-title":"J Am Geriatr Soc"},{"key":"6149_CR17","doi-asserted-by":"publisher","first-page":"29915","DOI":"10.1038\/s41598-024-78343-0","volume":"14","author":"Y Luo","year":"2024","unstructured":"Luo Y, Ni X, Yao W, Wang W, Li Y, Lv Q, et al. Correlation between admission hyperglycemia and postoperative pneumonia after hip fracture surgery: a propensity score-matched study. Sci Rep. 2024;14:29915.","journal-title":"Sci Rep"},{"key":"6149_CR18","doi-asserted-by":"publisher","first-page":"2020","DOI":"10.1111\/j.1532-5415.2012.04205.x","volume":"60","author":"JM Huddleston","year":"2012","unstructured":"Huddleston JM, Gullerud RE, Smither F, Huddleston PM, Larson DR, Phy MP, et al. Myocardial infarction after hip fracture repair: a population-based study. J Am Geriatr Soc. 2012;60:2020\u20136.","journal-title":"J Am Geriatr Soc"},{"key":"6149_CR19","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1093\/ageing\/afx178","volume":"47","author":"D O\u2019Mahony","year":"2018","unstructured":"O\u2019Mahony D, O\u2019Sullivan D, Byrne S, O\u2019Connor MN, Ryan C, Gallagher P. STOPP\/START criteria for potentially inappropriate prescribing in older people: version 2. Age Ageing. 2018;47:489.","journal-title":"Age Ageing"},{"key":"6149_CR20","doi-asserted-by":"publisher","first-page":"760","DOI":"10.12788\/jhm.2815","volume":"12","author":"LA Pauls","year":"2017","unstructured":"Pauls LA, Johnson-Paben R, McGready J, Murphy JD, Pronovost PJ, Wu CL. The weekend effect in hospitalized patients: a meta-analysis. J Hosp Med. 2017;12:760\u20136.","journal-title":"J Hosp Med"},{"key":"6149_CR21","doi-asserted-by":"publisher","first-page":"1216","DOI":"10.1302\/0301-620X.99B9.BJJ-2017-0101.R1","volume":"99\u2013B","author":"MC Fu","year":"2017","unstructured":"Fu MC, Boddapati V, Gausden EB, Samuel AM, Russell LA, Lane JM. Surgery for a fracture of the hip within 24 hours of admission is independently associated with reduced short-term post-operative complications. Bone Joint J. 2017;99\u2013B:1216\u201322.","journal-title":"Bone Joint J"},{"key":"6149_CR22","doi-asserted-by":"publisher","first-page":"625","DOI":"10.1007\/s00402-017-2674-2","volume":"137","author":"YH Cha","year":"2017","unstructured":"Cha YH, Ha YC, Yoo JI, Min YS, Lee YK, Koo KH. Effect of causes of surgical delay on early and late mortality in patients with proximal hip fracture. Arch Orthop Trauma Surg. 2017;137:625\u201330.","journal-title":"Arch Orthop Trauma Surg"},{"key":"6149_CR23","doi-asserted-by":"publisher","first-page":"164","DOI":"10.1186\/s12889-023-17531-5","volume":"24","author":"S Koike","year":"2024","unstructured":"Koike S, Wada H, Ohde S, Ide H, Taneda K, Tanigawa T. Working hours of full-time hospital physicians in japan: a cross-sectional nationwide survey. BMC Public Health. 2024;24:164.","journal-title":"BMC Public Health"}],"container-title":["BMC Geriatrics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12877-025-06149-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12877-025-06149-4\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12877-025-06149-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T19:02:34Z","timestamp":1751482954000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcgeriatr.biomedcentral.com\/articles\/10.1186\/s12877-025-06149-4"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,7,2]]},"references-count":23,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2025,12]]}},"alternative-id":["6149"],"URL":"https:\/\/doi.org\/10.1186\/s12877-025-06149-4","relation":{},"ISSN":["1471-2318"],"issn-type":[{"value":"1471-2318","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,7,2]]},"assertion":[{"value":"25 March 2025","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"11 June 2025","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"2 July 2025","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Thisresearch was approved by Fujita Health University Ethics Committee (approval no. HM23-357). The committee waived the requirement for informed consent and approved the use of the opt-out method for obtaining consent, indicating that all eligible patients were included in the present study unless they contacted us to opt out.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"The authors declare no competing interests.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"470"}}