Observational studyBMJ open2021
Increasing use of CT requested by emergency department physicians in tertiary hospitals in Western Australia 2003-2015: an analysis of linked administrative data.
Observational study in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
24 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Choosing wisely in neuroradiology: evaluating CT and MR utilization trends in Europe.European radiology · 2026Pooled it
- Acute medical care resource utilization of frail older patients presenting at the emergency department.European geriatric medicine · 2026Article
- After-hours CT report discrepancies: evaluating radiology resident performance.Emergency radiology · 2026Article
- External validation of the REDUCTION clinical decision aids for ruling out fractures in patients with midfacial and mandibular injuries in the emergency department: a protocol for a prospective multi-centre cohort study.Scandinavian journal of trauma, resuscitation and emergency medicine · 2026Article
- Automated opportunistic screening for low bone mineral density using routine CT brain imaging.Frontiers in radiology · 2026Article
- Ultra-low dose post-operative CT protocol after acetabular fixation has excellent intra- and inter-observer reliability.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025Article
- Exploring Senior Emergency Physicians' Perspectives on the Inclusion of Clinical Biomarkers in Clinical Decision Rules for CT Head Use in Patients With Suspected Traumatic Brain Injury.Emergency medicine Australasia : EMA · 2025Article
- Evaluation of New Zealand's Radiology, Nuclear Medicine, and Medical Imaging Research Output: A Bibliometric-Based Approach.Journal of medical radiation sciences · 2025Article
- Demonstrating the use of population level data to investigate trends in the rate, radiation dose and cost of Computed Tomography across clinical groups: Are there any areas of concern?Journal of medical radiation sciences · 2025Observational
- Continuing Professional Development - Medical Imaging.Journal of medical radiation sciences · 2025Article
- Trends in CT use in an emergency department in Western Australia: 2015-2022.Insights into imaging · 2025Article
- Sexual dimorphism in benign adrenocortical tumours.European journal of endocrinology · 2025Review
- Influence of obtaining medical records and laboratory data on the sensitivity of diagnostic imaging assessment by radiological technologists.Radiological physics and technology · 2025Article
- Mind the guideline gap: emergent CT in patients with epilepsy for trauma rule-out-A retrospective cohort study.Neurological research and practice · 2025Article
- Article
- Assessing context and readiness of emergency medicine physicians to promote evidence-based imaging referral guidelines: a mixed-methods study.Translational behavioral medicine · 2025Article
- Artificial Intelligence for Detecting Pulmonary EmbolismsCurrent medical imaging · 2025Article
- Article
- Patterns of computed tomography utilisation in injury management: latent classes approach using linked administrative data in Western Australia.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2023Observational
- Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThis study aimed to examine trends in number of CT scans requested by tertiary emergency department (ED) physicians in Western Australia (WA) from 2003 to 2015 across broad demographic and presentation characteristics, anatomical areas and presented symptoms.
designAn observational cross-sectional study over study period from 2003 to 2015.
settingLinked administrative health service data at individual level from WA.
participantsA total of 1 666 884 tertiary hospital ED presentations of people aged 18 years or older were included in this study
main outcome measureNumber of CT scans requested by tertiary ED physicians in an ED presentation.
methodsPoisson regression models were used to assess variation and trends in number of CT scans requested by ED physicians across demographic characteristics, clinical presentation characteristics and anatomical areas.
resultsOver the entire study duration, 71 per 1000 ED episodes had a CT requested by tertiary ED physicians. Between 2003 and 2015, the rate of CT scanning almost doubled from 58 to 105 per 1000 ED presentations. After adjusted for all observed characteristics, the rate of CT scans showed a downward trend from 2009 to 2011 and subsequent increase. Males, older individuals, those attending ED as a result of pain, those with neurological symptoms or injury or with higher priority triage code were the most likely to have CT requested by tertiary ED physicians.
conclusionsNoticeable changes in the number of CTs requested by tertiary ED physicians corresponded to the time frame of major health reforms happening within WA and nationally.
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