Evidence map›Paper›PMID 22476446›Full record

SynthesisIntensive care medicine2012

Does patient volume affect clinical outcomes in adult intensive care units?

Mrudula H Kanhere, Harsh A Kanhere, Alun Cameron, Guy J Maddern

Abstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Intensive care medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
–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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
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  13. PICU Volume and Outcome: A Severity-Adjusted Analysis.Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies · 2016
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  14. Review
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  17. Observational
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Mrudula H KanhereIntensive Care Unit, Lyell McEwin Hospital, Haydown Road, Elizabeth Vale, Adelaide, SA, 5112, Australia. mrudulaharsh@hotmail.com
Harsh A Kanhere
Alun Cameron
Guy J Maddern

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis systematic review assessed if outcomes in adult intensive care units (ICUs) are related to hospital and ICU patient volume.

methodsA systematic search strategy was used to identify studies reporting on volume-outcome relationship in adult ICU patients till November 2010. Inclusion of articles was established through a predetermined protocol. Two reviewers assessed studies independently and data extraction was performed using standardized data extraction forms.

resultsA total of 254 articles were screened. Of these 25 were relevant to this study. After further evaluation a total of 13 studies including 596,259 patients across 1,068 ICUs met the inclusion criteria and were reviewed. All were observational cohort studies. Four of the studies included all admissions to ICU, five included mechanically ventilated patients, two reported on patients admitted with sepsis and one study each reported on patients admitted with medical diagnoses and post cardiac arrest patients admitted to ICU, respectively. There was a wide variability in the quantitative definition of volume and classification of hospitals and ICUs on this basis. Methodological heterogeneity amongst the studies precluded a formal meta-analysis. A trend towards favourable outcomes for high volume centres was observed in all studies. Risk-adjusted mortality rates revealed a survival advantage for a specific group of patients in high volume centres in ten studies but no significant difference in outcomes was evident in three studies.

conclusionsThe results indicate that outcomes of certain subsets of ICU patients--especially those on mechanical ventilation, high-risk patients, and patients with severe sepsis--are better in high volume centres within the constraints of risk adjustments.

Indexed as

Quality of Health CareTreatment OutcomeAdultHumansIntensive Care UnitsRespiration, Artificial

Identifiers

What OpenQuestion holds

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Registered trials

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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.