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. 2024 Apr 12;53(4):afae073. doi: 10.1093/ageing/afae073

Table 1.

Population and study characteristics

First author Year Setting N Study type Population Reason for admission Quality
Alvarez-Bastidas [36] 2018 Mexico 100 Cross sectional Adults (60 +) Undergoing surgery less than 60 min and receiving analgesia Fair
Ansaloni [46] 2020 Italy 357 Case–control Adults (65+) Emergency or elective operations Fair
Bjoro [31] 2008 Norway 204 Cohort prospective Adults (65+) Hip fracture surgery Good
Bowman [20] 1997 USA 43 Cohort prospective Adults Undergoing orthopaedic hip surgery Fair
Brown [47] 2016 USA 89 Cohort prospective Adults (70+) Elective spine surgery Fair
Contín [48] 2005 Spain 236 Cohort prospective Adults (51 to 80) Elective orthopaedic surgery Fair
Duprey [21] 2022 USA 560 Secondary analysis Adults (70+) Undergoing major elective surgery Good
Feast [32] 2018 UK 230 Cross sectional Dementia Adults (70+) Unplanned medical hospital admission Good
Jain [49] 2011 USA 400 RCT Secondary analysis Adults (65+) or < 65 if history of delirium Elective total hip or knee replacement surgery Poor
Johansson [50] 2013 Sweden 49 Cohort prospective Adults (70+) Hip fracture surgery Fair
Kosar [38] 2014 USA 459 Cohort prospective Adults (70+) Major elective surgery Good
Kubota [51] 2018 Japan 2,168 Cohort retrospective Adults Surgical ward admission Good
Leung [52] 2009 USA 335 Nested cohort prospective Adults (65+) Noncardiac surgery Fair
Leung [53] 2013 USA 581 Cohort prospective Adults (65+) Scheduled for major non-cardiac surgery Good
Lewis [29] 2017 Tanzania 494 Cross sectional Adults (60+) Admitted to medical wards Good
Li [54] 2019 China 111 Cohort prospective Adults (65+) Acute STEMI following primary PCI Fair
Liang [55] 2014 Taiwan 232 Cohort prospective Adults (60+) Orthopaedic surgery Good
Lin [33] 2016 Taiwan 1,609 Cohort prospective Adults (60+) Elective noncardiac surgery and general anaesthesia Good
Liu [22] 2022 China 184 Cohort prospective Adults (60+) Thoracic and abdominal surgery Good
Lynch [56] 1998 USA 361 Cohort prospective Adults (50+) Major elective noncardiac operations Good
Matsuo [45] 2017 Japan 207 Cohort prospective Adults (20+) Advanced cancer patients receiving corticosteroids to treat fatigue or anorexia Fair
Morrison [34] 2003 USA 539 Cohort prospective Adults Hip fracture Fair
Narayanan [39] 2022 India 50 Cohort prospective Adults (61+) Elective onco-surgery Good
Oh [35] 2008 Korea 224 Cohort retrospective Adults (71+) Neurosurgical operation Good
Roche-Albero [57] 2021 Spain 133 Cohort prospective Adults (65+) Osteoporotic hip fracture Fair
Salottolo [58] 2022 USA 517 Cohort prospective Adults (55–90) Traumatic hip fracture Good
Sieber [59] 2011 USA 236 Cohort prospective Adults (65+) Hip fracture repair Fair
Susano [60] 2019 USA 715 Cohort retrospective Adults (65+) Spinal surgery Good
Vaurio [30] 2006 USA 331 Cohort prospective Adults (65+) Elective noncardiac surgery Fair
Xue [61] 2016 China 358 Cohort prospective Adults (65+) Transurethral resection of prostate Fair