{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T22:38:27Z","timestamp":1775169507968,"version":"3.50.1"},"reference-count":29,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2017,3,9]],"date-time":"2017-03-09T00:00:00Z","timestamp":1489017600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Geriatrics Gerontology Int"],"published-print":{"date-parts":[[2017,11]]},"abstract":"<jats:sec><jats:title>Aim<\/jats:title><jats:p>To examine discharges of octogenarians, nonagenarians and centenarians from Portuguese public hospitals, namely admission type, principal diagnoses, comorbidities and length of stay.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The present study used administrative data from public acute care hospitals in the Portuguese National Health Service. All discharges of persons aged \u226580 years between 2000 and 2014 were analyzed. HCUP Clinical Classifications Software was considered to aggregate principal diagnosis, and comorbidities were assessed using the Charlson Comorbidity Index computed using International Classification of Diseases 9th Revision Clinical Modification codes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 2 494 924 discharges of persons aged 80 years or older were registered. Most (73.7%) referred to inpatient episodes, of which 73% were unplanned and medical (non\u2010surgical). Pneumonia (12.2%), acute cerebrovascular disease (7.1%) and non\u2010hypertensive cardiac heart failure (5.3%) were the most common principal diagnoses among inpatient episodes. Congestive heart failure and diabetes without chronic complications were the two most frequent comorbidities (16.6%), and discharge diagnoses with higher median length of stay were tuberculosis, burns, and infective arthritis and osteomyelitis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The number of hospitalizations of the oldest old has suffered a significant increase in the past few years, reinforcing the need for healthcare services being prepared to the specificities of the oldest old population. <jats:bold>Geriatr Gerontol Int 2017; 17: 2255\u20132265.<\/jats:bold><\/jats:p><\/jats:sec>","DOI":"10.1111\/ggi.13006","type":"journal-article","created":{"date-parts":[[2017,3,9]],"date-time":"2017-03-09T10:17:08Z","timestamp":1489054628000},"page":"2255-2265","source":"Crossref","is-referenced-by-count":13,"title":["Hospital admissions by the oldest old: Past trends in one of the most ageing countries in the world"],"prefix":"10.1111","volume":"17","author":[{"given":"Daniela","family":"Brand\u00e3o","sequence":"first","affiliation":[{"name":"Research and Education Unit on Aging (UNIFAI\/ICBAS\u2010UP) University of Oporto  Oporto Portugal"},{"name":"Faculty of Medicine University of Oporto (FMUP\u2010UP)  Oporto Portugal"},{"name":"Center for Health Technology and Services Research (CINTESIS)  Oporto Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oscar","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Research and Education Unit on Aging (UNIFAI\/ICBAS\u2010UP) University of Oporto  Oporto Portugal"},{"name":"Center for Health Technology and Services Research (CINTESIS)  Oporto Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alberto","family":"Freitas","sequence":"additional","affiliation":[{"name":"Faculty of Medicine University of Oporto (FMUP\u2010UP)  Oporto Portugal"},{"name":"Center for Health Technology and Services Research (CINTESIS)  Oporto Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Constan\u00e7a","family":"Pa\u00fal","sequence":"additional","affiliation":[{"name":"Research and Education Unit on Aging (UNIFAI\/ICBAS\u2010UP) University of Oporto  Oporto Portugal"},{"name":"Center for Health Technology and Services Research (CINTESIS)  Oporto Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2017,3,9]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.archger.2004.01.003"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1067\/mem.2002.121523"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1741-6612.1999.tb00102.x"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/ggi.12586"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1474-9726.2009.00474.x"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/ageing\/afu113"},{"key":"e_1_2_7_8_1","volume-title":"Censos \u2010 Resultados definitivos, Regi\u00e3o Norte \u2013 2011","author":"National Statistical Institute of Portugal (INE)","year":"2012"},{"key":"e_1_2_7_9_1","first-page":"1","article-title":"Portugal: Health system review","volume":"13","author":"Barros P","year":"2011","journal-title":"Health Syst Transit"},{"key":"e_1_2_7_10_1","unstructured":"Healthcare Cost and Utilization Project (HCUP).Clinical Classifications Software (CCS) for ICD\u20109\u2010CM. 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