Evidence and sources

Every empirical claim in this section is tied to a named source. This is the full list of 32 trials, systematic reviews, guidelines and Australian regulatory documents, with the topic pages that rely on each one.

How these sources are used

Interventions are graded on randomised trial evidence for the outcome that matters: recovery, harm, hospital transfer, deaths, or antibiotics avoided without harm. Trials in nursing homes and residential aged care are preferred. Many were done in North America or Europe, and that is stated where the finding is described.

Observational studies, post hoc analyses and non-randomised evaluations are labelled as such and are not graded. Where no trial was found, as for early warning scores and resident outcomes, that is said.

Australian requirements come from the strengthened Aged Care Quality Standards, the Australian Commission on Safety and Quality in Health Care, and Commonwealth and Queensland government pages. Regulatory requirements, quality indicator figures and service details are correct as at the review date below and change. Two guideline references were checked at abstract level only, as their citations note. Confirm the current position against the primary source before relying on it.

Last full evidence review: November 2026.

Sources

1

Australian Government Department of Health, Disability and Ageing. Strengthened Aged Care Quality Standards (November 2025; implemented 1 November 2025). Outcome 3.2, Actions 3.2.4 and 3.2.5; Outcome 3.3, Action 3.3.3; Outcome 5.2, Actions 5.2.1 and 5.2.2; Outcome 5.4, Actions 5.4.2 and 5.4.5. View source

Cited in: Recognising deterioration in a resident Antibiotics and antimicrobial stewardship in aged care Escalating concern: the GP, after-hours care and 000 The deteriorating resident: a guide for facility leadership
2

Australian Commission on Safety and Quality in Health Care. Sepsis Clinical Care Standard. Sydney: ACSQHC; June 2022. (Primary settings are ambulance services, hospitals and urgent care centres; also listed as relevant to aged care homes and general practice.) View source

Cited in: Recognising deterioration in a resident Chest infections and aspiration Sepsis in older people The deteriorating resident: a guide for facility leadership
3

Australian Commission on Safety and Quality in Health Care. Delirium Clinical Care Standard. Sydney: ACSQHC; first released 2016, revised September 2021. (Written mainly for hospitals; states it can be adapted for residential aged care.) View source

Cited in: Recognising deterioration in a resident Delirium: recognising it and finding the cause Dehydration and acute kidney injury
4

Australian Commission on Safety and Quality in Health Care. Guidance for implementation of the Antimicrobial Stewardship Clinical Care Standard in aged care. Sydney: ACSQHC; November 2024. View source

Cited in: Urine tests, “UTIs” and asymptomatic bacteriuria Antibiotics and antimicrobial stewardship in aged care The deteriorating resident: a guide for facility leadership
5

Australian Government Department of Health, Disability and Ageing. Infections and antimicrobial prescribing in Australian residential aged care homes: results of the 2023 Aged Care National Antimicrobial Prescribing Survey. Canberra; 2025. (Prepared by the Royal Melbourne Hospital and the National Centre for Antimicrobial Stewardship; 852 homes, 53,843 residents; point-prevalence survey.) View source

Cited in: Antibiotics and antimicrobial stewardship in aged care The deteriorating resident: a guide for facility leadership
6

Australian Government Department of Health, Disability and Ageing. National Aged Care Mandatory Quality Indicator Program: quick reference guide, hospitalisation. (Undated; published October 2025.) View source

Cited in: Hospital or not: goals of care and hospital avoidance The deteriorating resident: a guide for facility leadership
7

Australian Institute of Health and Welfare, GEN Aged Care Data. Residential aged care quality indicators — October to December 2025 (released 23 April 2026; 2,575 homes; trend analysis over 18 quarters from July–September 2021). Reported quarterly; later quarters are published on the same page. View source

Cited in: Hospital or not: goals of care and hospital avoidance The deteriorating resident: a guide for facility leadership
8

High KP, Bradley SF, Gravenstein S, et al. Clinical practice guideline for the evaluation of fever and infection in older adult residents of long-term care facilities: 2008 update by the Infectious Diseases Society of America. J Am Geriatr Soc. 2009;57:375–94. (US guideline; checked at abstract level.) View source

Cited in: Recognising deterioration in a resident Chest infections and aspiration Sepsis in older people
9

Hodgson P, Greaves J, Cook G, Fraser A, Bainbridge L. A study to introduce National Early Warning Scores (NEWS) in care homes: influence on decision-making and referral processes. Nurs Open. 2022;9:519–26. (Observational mixed-methods study; 276 residents in four English care homes.) View source

Cited in: Recognising deterioration in a resident
10

Graverholt B, Espehaug B, Ciliska D, Potrebny T. The effectiveness of a knowledge translation intervention on the implementation of NEWS2 in nursing homes, a pragmatic cluster RCT. Implement Sci. 2024;19:64. (21 Norwegian nursing homes; outcome was use of NEWS2, not resident outcomes.) View source

Cited in: Recognising deterioration in a resident The deteriorating resident: a guide for facility leadership
11

Kane RL, Huckfeldt P, Tappen R, et al. Effects of an intervention to reduce hospitalizations from nursing homes: a randomized implementation trial of the INTERACT program. JAMA Intern Med. 2017;177:1257–64. (85 US nursing homes, 36,717 residents.) View source

Cited in: Recognising deterioration in a resident Hospital or not: goals of care and hospital avoidance The deteriorating resident: a guide for facility leadership
12

Houdelet-Oertel A, Lauer R, Molitor V, et al. Prevalence of delirium among older nursing home residents: a systematic review and meta-analysis. Eur Geriatr Med. 2026;17:1357–76. (Nine studies, 4,291 residents; high heterogeneity.) View source

Cited in: Delirium: recognising it and finding the cause
13

Tieges Z, Maclullich AMJ, Anand A, et al. Diagnostic accuracy of the 4AT for delirium detection in older adults: systematic review and meta-analysis. Age Ageing. 2021;50:733–43. (17 studies, 3,702 observations; mostly hospital and emergency department settings, one care home.) View source

Cited in: Delirium: recognising it and finding the cause
14

Woodhouse R, Burton JK, Rana N, Pang YL, Lister JE, Siddiqi N. Interventions for preventing delirium in older people in institutional long-term care. Cochrane Database Syst Rev. 2019;4:CD009537. (Three cluster randomised trials, 3,851 participants.) View source

Cited in: Delirium: recognising it and finding the cause Dehydration and acute kidney injury
15

Juthani-Mehta M, Quagliarello V, Perrelli E, Towle V, Van Ness PH, Tinetti M. Clinical features to identify urinary tract infection in nursing home residents: a cohort study. J Am Geriatr Soc. 2009;57:963–70. (Prospective observational cohort; 551 residents without catheters in five US nursing homes.) View source

Cited in: Recognising deterioration in a resident Urine tests, “UTIs” and asymptomatic bacteriuria
16

Nicolle LE, Gupta K, Bradley SF, et al. Clinical practice guideline for the management of asymptomatic bacteriuria: 2019 update by the Infectious Diseases Society of America. Clin Infect Dis. 2019;68:e83–110. (Checked at abstract level.) View source

Cited in: Urine tests, “UTIs” and asymptomatic bacteriuria Antibiotics and antimicrobial stewardship in aged care
17

Loeb M, Brazil K, Lohfeld L, et al. Effect of a multifaceted intervention on number of antimicrobial prescriptions for suspected urinary tract infections in residents of nursing homes: cluster randomised controlled trial. BMJ. 2005;331:669. (24 nursing homes in Ontario and Idaho; 4,217 residents.) View source

Cited in: Urine tests, “UTIs” and asymptomatic bacteriuria Antibiotics and antimicrobial stewardship in aged care The deteriorating resident: a guide for facility leadership
18

Juthani-Mehta M, Van Ness PH, Bianco L, et al. Effect of cranberry capsules on bacteriuria plus pyuria among older women in nursing homes: a randomized clinical trial. JAMA. 2016;316:1879–87. (185 women in 21 US nursing homes.) View source

Cited in: Urine tests, “UTIs” and asymptomatic bacteriuria
19

Nguyen HQ, Tunney MM, Hughes CM. Interventions to improve antimicrobial stewardship for older people in care homes: a systematic review. Drugs Aging. 2019;36:355–69. (Five randomised trials; overall quality low.) View source

Cited in: Antibiotics and antimicrobial stewardship in aged care
20

Tandan M, Thapa P, Maharjan P, Bhandari B. Impact of antimicrobial stewardship program on antimicrobial-resistance and prescribing in nursing homes: a systematic review and meta-analysis. J Glob Antimicrob Resist. 2022;29:74–87. (16 studies, 216 nursing homes; programs targeting urinary infection.) View source

Cited in: Antibiotics and antimicrobial stewardship in aged care
21

Loeb M, Carusone SC, Goeree R, et al. Effect of a clinical pathway to reduce hospitalizations in nursing home residents with pneumonia: a randomized controlled trial. JAMA. 2006;295:2503–10. (Cluster randomised; 680 residents in 22 nursing homes in Hamilton, Ontario.) View source

Cited in: Chest infections and aspiration Dehydration and acute kidney injury Hospital or not: goals of care and hospital avoidance
22

Cao Y, Liu C, Lin J, et al. Oral care measures for preventing nursing home-acquired pneumonia. Cochrane Database Syst Rev. 2022;11:CD012416. (Six randomised trials, 6,244 participants, all at high risk of bias.) View source

Cited in: Chest infections and aspiration
23

Hooper L, Abdelhamid A, Attreed NJ, et al. Clinical symptoms, signs and tests for identification of impending and current water-loss dehydration in older people. Cochrane Database Syst Rev. 2015;(4):CD009647. (Diagnostic accuracy review; people aged 65 or more.) View source

Cited in: Recognising deterioration in a resident Dehydration and acute kidney injury
24

Whiting P, Morden A, Tomlinson LA, et al. What are the risks and benefits of temporarily discontinuing medications to prevent acute kidney injury? A systematic review and meta-analysis. BMJ Open. 2017;7:e012674. (Six studies, all in hospital.) View source

Cited in: Dehydration and acute kidney injury
25

Müller M, Jürgens J, Redaèlli M, Klingberg K, Hautz WE, Stock S. Impact of the communication and patient hand-off tool SBAR on patient safety: a systematic review. BMJ Open. 2018;8:e022202. (Eight before-and-after studies and three controlled trials, including nursing homes.) View source

Cited in: Escalating concern: the GP, after-hours care and 000 The deteriorating resident: a guide for facility leadership
26

Aged Care Quality and Safety Commission, resource library. ISBAR: Identify, Situation, Background, Assessment and Recommendation. (Undated; listed as a state or territory resource, not a Commission publication.) View source

Cited in: Escalating concern: the GP, after-hours care and 000 The deteriorating resident: a guide for facility leadership
27

Healthdirect Australia. Calling triple zero (000). (Last reviewed August 2025.) View source

Cited in: Sepsis in older people Escalating concern: the GP, after-hours care and 000 The deteriorating resident: a guide for facility leadership
28

Dwyer R, Gabbe B, Stoelwinder JU, Lowthian J. A systematic review of outcomes following emergency transfer to hospital for residents of aged care facilities. Age Ageing. 2014;43:759–66. (Observational studies.) View source

Cited in: Hospital or not: goals of care and hospital avoidance
29

Caplan GA, Meller A, Squires B, Chan S, Willett W. Advance care planning and hospital in the nursing home. Age Ageing. 2006;35:581–5. (Controlled, non-randomised evaluation; 21 intervention and 13 control nursing homes in Sydney.) View source

Cited in: Hospital or not: goals of care and hospital avoidance
30

Sunner C, Giles M, Ball J, et al. Implementation and evaluation of a nurse-led intervention to augment an existing residential aged care facility outreach service with a visual telehealth consultation: stepped-wedge cluster randomised controlled trial. BMC Health Serv Res. 2023;23:1429. (16 facilities in two New South Wales local health districts.) View source

Cited in: Escalating concern: the GP, after-hours care and 000 Hospital or not: goals of care and hospital avoidance
31

Clinical Excellence Queensland, Improvement Exchange. Residential aged care facility acute care support service (RaSS). (Published 9 August 2019; status listed as sustained.) View source

Cited in: Hospital or not: goals of care and hospital avoidance
32

Queensland Health. RaSS telephone triage contacts for registered nurses, clinical managers and GPs. (Last updated 20 April 2022.) View source

Cited in: Escalating concern: the GP, after-hours care and 000 Hospital or not: goals of care and hospital avoidance The deteriorating resident: a guide for facility leadership

Listing a source is not an endorsement of every conclusion its authors draw, and summarising a trial in one sentence necessarily loses detail. Where a finding matters to a decision, read the original.

Written by Dr Josh Hatch, FRACGP. This page is general information reflecting his reading of these sources, not individual medical advice.

This is general education, not a clinical protocol. The doctors who practise with Umbrella Aged Care are independent general practitioners, and each makes their own clinical decisions with the resident and family. Your GP’s advice for an individual may differ from what is written here. If it does, please ask them to talk it through with you.