Evidence map›Paper›PMID 11823362›Full record

ArticleBMJ (Clinical research ed.)2002

Booked inpatient admissions and hospital capacity: mathematical modelling study.

Steve Gallivan, Martin Utley, Tom Treasure, Oswaldo Valencia

Abstract read
In one paragraph

Article in BMJ (Clinical research ed.), 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Observational
  5. Article
  6. Article
  7. Observational
  8. Article
  9. A technical note concerning emergency bed demand.Health care management science · 2011
    Article
  10. Article
  11. Managing capacity and demand across the patient journey.Clinical medicine (London, England) · 2010
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. A three-phase approach for operating theatre schedules.Health care management science · 2007
    Article
  18. Article
  19. [Allocating and scheduling operating room time].Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen · 2005
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Steve GallivanClinical Operational Research Unit, University College London, London WC1E 6BT. s.gallivan@ucl.ac.uk
Martin Utley
Tom Treasure
Oswaldo Valencia

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo investigate the variability of patients' length of stay in intensive care after cardiac surgery. To investigate potential interactions between such variability, booked admissions, and capacity requirements.

designMathematical modelling study using routinely collected data.

settingA cardiac surgery department. SOURCE OF DATA: Hospital records of 7014 people entering intensive care after cardiac surgery.

main outcome measuresLength of stay in intensive care; capacity requirements of an intensive care unit for a hypothetical booked admission system.

resultsAlthough the vast majority of patients (89.5%) had a length of stay in intensive care of < or = 48 hours, there was considerable overall variability and the distribution of stays has a lengthy tail. A mathematical model of the operation of a hypothetical booking system indicates that such variability has a considerable impact on intensive care capacity requirements, indicating that a high degree of reserve capacity is required to avoid high rates of operation cancellation because of unavailability of suitable postoperative care.

conclusionDespite the considerable enthusiasm for booked admissions systems, queuing theory suggests that caution is required when considering such systems for inpatient admissions. Such systems may well result in frequent operational difficulties if there is a high degree of variability in length of stay and where reserve capacity is limited. Both of these are common in the NHS.

Indexed as

Models, StatisticalAdmitting Department, HospitalBed OccupancyCoronary Care UnitsHeart DiseasesHospital Bed CapacityHumansIntensive Care UnitsLength of StayLondonPatient Care Management

Identifiers

PMID11823362
PMCPMC65062

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.