{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,7]],"date-time":"2025-12-07T04:39:50Z","timestamp":1765082390825,"version":"3.46.0"},"reference-count":27,"publisher":"BMJ","issue":"4","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2016,1,29]]},"published-print":{"date-parts":[[2016,4]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To explore whether older adults with isolated hip fractures benefit from treatment in high-volume hospitals.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Population-based observational study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>All acute hospitals in California, USA.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>All individuals aged \u226565 that underwent an operation for an isolated hip fracture in California between 2007 and 2011. Patients transferred between hospitals were excluded.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Primary and secondary outcomes<\/jats:title>\n                    <jats:p>Quality indicators (time to surgery) and patient outcomes (length of stay, in-hospital mortality, unplanned 30-day readmission, and selected complications).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>91\u2005401 individuals satisfied the inclusion criteria. Time to operation and length of stay were significantly prolonged in low-volume hospitals, by 1.96 (95% CI 1.20 to 2.73) and 0.70 (0.38 to 1.03) days, respectively. However, there were no differences in clinical outcomes, including in-hospital mortality, 30-day re-admission, and rates of pneumonia, pressure ulcers, and venous thromboembolism.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>These data suggest that there is no patient safety imperative to limit hip fracture care to high-volume hospitals.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2015-010743","type":"journal-article","created":{"date-parts":[[2016,4,8]],"date-time":"2016-04-08T13:35:39Z","timestamp":1460122539000},"page":"e010743","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":33,"title":["Hospital case volume and outcomes for proximal femoral fractures in the USA: an observational study"],"prefix":"10.1136","volume":"6","author":[{"given":"David","family":"Metcalfe","sequence":"first","affiliation":[{"name":"Center for Surgery and Public Health, Harvard Medical School, Boston, Massachusetts, USA"},{"name":"Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Kadoorie Centre, John Radcliffe Hospital, Oxford, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ali","family":"Salim","sequence":"additional","affiliation":[{"name":"Center for Surgery and Public Health, Harvard Medical School, Boston, Massachusetts, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Olubode","family":"Olufajo","sequence":"additional","affiliation":[{"name":"Center for Surgery and Public Health, Harvard Medical School, Boston, Massachusetts, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Belinda","family":"Gabbe","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Preventive Medicine, The Alfred Centre, Melbourne, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cheryl","family":"Zogg","sequence":"additional","affiliation":[{"name":"Center for Surgery and Public Health, Harvard Medical School, Boston, Massachusetts, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitchel B","family":"Harris","sequence":"additional","affiliation":[{"name":"Department of Trauma & Orthopaedic Surgery, Brigham & Women's Hospital, Boston, Massachusetts, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel C","family":"Perry","sequence":"additional","affiliation":[{"name":"University of Liverpool, Liverpool, Merseyside, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthew L","family":"Costa","sequence":"additional","affiliation":[{"name":"Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Kadoorie Centre, John Radcliffe Hospital, Oxford, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2016,4,7]]},"reference":[{"key":"2025120619011380000_6.4.e010743.1","first-page":"66","article-title":"What's new in hip fractures? 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