{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T02:26:28Z","timestamp":1790821588718,"version":"4.1.0"},"reference-count":45,"publisher":"Oxford University Press (OUP)","issue":"6","license":[{"start":{"date-parts":[[2021,7,3]],"date-time":"2021-07-03T00:00:00Z","timestamp":1625270400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,11,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>older patients with hip fractures are arbitrarily classified as octogenarians, nonagenarians and centenarians. We have designed this study to quantify in-hospital mortality and complications among each of these groups. We hypothesised that the associations between age and in-hospital mortality and complications are continuously increasing, and that these risks increase rapidly when patients reach a certain age.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>this research is a retrospective cohort study using nationwide database between 2010 and 2018. Patients undergoing hip fracture surgery, and aged 60 or older, were included. The associations between patient age, in-hospital mortality and complications were visualised using the restricted cubic spline models, and were analysed employing multivariable regression models. Then, octogenarians, nonagenarians and centenarians were compared.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>among a total of 565,950 patients, 48.7% (n\u2009=\u2009275,775) were octogenarians, 23.0% (n\u2009=\u2009129,937) were nonagenarians and 0.7% (n\u2009=\u20094,093) were centenarians. The models presented three types of association between age, in-hospital mortality and complications: (i) a continuous increase (mortality and respiratory complications); (ii) a mild increase followed by a steep rise (intensive care unit admission, heart failure, renal failure and surgical site hematoma) and (iii) a steep increase followed by a limited change (coronary heart disease, stroke and pulmonary embolisms).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>we identified three types of association between age and clinical outcomes. Patients aged 85\u201390 may constitute the upper threshold for age categorisations, because the risk of in-hospital complications changed dramatically at that stage. This information can improve clinical awareness of various complications and support collective decision-making.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/ageing\/afab137","type":"journal-article","created":{"date-parts":[[2021,6,2]],"date-time":"2021-06-02T19:33:50Z","timestamp":1622662430000},"page":"1952-1960","source":"Crossref","is-referenced-by-count":38,"title":["Age and clinical outcomes after hip fracture surgery: do octogenarian, nonagenarian and centenarian classifications matter?"],"prefix":"10.1093","volume":"50","author":[{"given":"Takahisa","family":"Ogawa","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haggai","family":"Schermann","sequence":"additional","affiliation":[{"name":"Division of Orthopedic Surgery, Tel Aviv Sourasky Medical Center, Affiliated with Tel Aviv University, Tel 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