Evidence map›Paper›PMID 36649951›Full record

ArticleCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne2023

Survival and health care costs after inpatient elective surgery: comparison of patients with and without chronic obstructive pulmonary disease.

Ashwin Sankar, Kevin Thorpe, Daniel I McIsaac, Jin Luo, Duminda N Wijeysundera, Andrea S Gershon

Open access · goldAbstract readComparative Study
In one paragraph

Article in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
13.6field-weighted citation impact, top 1% of its field
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

7 citing papers in PubMed, 62 citations in OpenAlex.

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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

6 authors at 1 institution in 1 country.

Ashwin SankarDepartment of Anesthesia (Sankar, Wijeysundera), Unity Health Toronto, St. Michael's Hospital; Department of Anesthesiology and Pain Medicine (Sankar, Wijeysundera), University of Toronto; ICES Central (Sankar, McIsaac, Luo, Wijeysundera, Gershon); Li Ka Shing Knowledge Institute of St. Michael's Hospital (Sankar, Wijeysundera); Dalla Lana School of Public Health (Thorpe, Gershon), University of Toronto; Applied Health Research Centre (AHRC) (Thorpe), Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), University of Ottawa; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital; Ottawa Hospital Research Institute (McIsaac), Ottawa, Ont.; Division of Respirology, Department of Medicine (Gershon), University of Toronto; Division of Respirology, Department of Medicine (Gershon), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont. ashwin.sankar@mail.utoronto.ca.
Kevin ThorpeDepartment of Anesthesia (Sankar, Wijeysundera), Unity Health Toronto, St. Michael's Hospital; Department of Anesthesiology and Pain Medicine (Sankar, Wijeysundera), University of Toronto; ICES Central (Sankar, McIsaac, Luo, Wijeysundera, Gershon); Li Ka Shing Knowledge Institute of St. Michael's Hospital (Sankar, Wijeysundera); Dalla Lana School of Public Health (Thorpe, Gershon), University of Toronto; Applied Health Research Centre (AHRC) (Thorpe), Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), University of Ottawa; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital; Ottawa Hospital Research Institute (McIsaac), Ottawa, Ont.; Division of Respirology, Department of Medicine (Gershon), University of Toronto; Division of Respirology, Department of Medicine (Gershon), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont.
Daniel I McIsaacDepartment of Anesthesia (Sankar, Wijeysundera), Unity Health Toronto, St. Michael's Hospital; Department of Anesthesiology and Pain Medicine (Sankar, Wijeysundera), University of Toronto; ICES Central (Sankar, McIsaac, Luo, Wijeysundera, Gershon); Li Ka Shing Knowledge Institute of St. Michael's Hospital (Sankar, Wijeysundera); Dalla Lana School of Public Health (Thorpe, Gershon), University of Toronto; Applied Health Research Centre (AHRC) (Thorpe), Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), University of Ottawa; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital; Ottawa Hospital Research Institute (McIsaac), Ottawa, Ont.; Division of Respirology, Department of Medicine (Gershon), University of Toronto; Division of Respirology, Department of Medicine (Gershon), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont.
Jin LuoDepartment of Anesthesia (Sankar, Wijeysundera), Unity Health Toronto, St. Michael's Hospital; Department of Anesthesiology and Pain Medicine (Sankar, Wijeysundera), University of Toronto; ICES Central (Sankar, McIsaac, Luo, Wijeysundera, Gershon); Li Ka Shing Knowledge Institute of St. Michael's Hospital (Sankar, Wijeysundera); Dalla Lana School of Public Health (Thorpe, Gershon), University of Toronto; Applied Health Research Centre (AHRC) (Thorpe), Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), University of Ottawa; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital; Ottawa Hospital Research Institute (McIsaac), Ottawa, Ont.; Division of Respirology, Department of Medicine (Gershon), University of Toronto; Division of Respirology, Department of Medicine (Gershon), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont.
Duminda N WijeysunderaDepartment of Anesthesia (Sankar, Wijeysundera), Unity Health Toronto, St. Michael's Hospital; Department of Anesthesiology and Pain Medicine (Sankar, Wijeysundera), University of Toronto; ICES Central (Sankar, McIsaac, Luo, Wijeysundera, Gershon); Li Ka Shing Knowledge Institute of St. Michael's Hospital (Sankar, Wijeysundera); Dalla Lana School of Public Health (Thorpe, Gershon), University of Toronto; Applied Health Research Centre (AHRC) (Thorpe), Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), University of Ottawa; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital; Ottawa Hospital Research Institute (McIsaac), Ottawa, Ont.; Division of Respirology, Department of Medicine (Gershon), University of Toronto; Division of Respirology, Department of Medicine (Gershon), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont.
Andrea S GershonDepartment of Anesthesia (Sankar, Wijeysundera), Unity Health Toronto, St. Michael's Hospital; Department of Anesthesiology and Pain Medicine (Sankar, Wijeysundera), University of Toronto; ICES Central (Sankar, McIsaac, Luo, Wijeysundera, Gershon); Li Ka Shing Knowledge Institute of St. Michael's Hospital (Sankar, Wijeysundera); Dalla Lana School of Public Health (Thorpe, Gershon), University of Toronto; Applied Health Research Centre (AHRC) (Thorpe), Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), University of Ottawa; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital; Ottawa Hospital Research Institute (McIsaac), Ottawa, Ont.; Division of Respirology, Department of Medicine (Gershon), University of Toronto; Division of Respirology, Department of Medicine (Gershon), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ont.
St Michael's Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic obstructive pulmonary disease (COPD) is common among surgical patients, and patients with COPD have higher risk for complications and death within 30 days after surgery. We sought to describe the longer-term postoperative survival and costs of patients with COPD compared with those without COPD within 1 year after inpatient elective surgery.

methodsIn this retrospective population-based cohort study, we used linked health administrative databases to identify all patients undergoing inpatient elective surgery in Ontario, Canada, from 2005 to 2019. We ascertained COPD status using validated definitions. We followed participants for 1 year after surgery to evaluate survival and costs to the health system. We quantified the association of COPD with survival (Cox proportional hazards models) and costs (linear regression model with log-transformed costs) with partial adjustment (for sociodemographic factors and procedure type) and full adjustment (also adjusting for comorbidities). We assessed for effect modification by frailty, cancer and procedure type.

resultsWe included 932 616 patients, of whom 170 482 (18%) had COPD. With respect to association with risk of death, COPD had a partially adjusted hazard ratio (HR) of 1.61 (95% confidence interval [CI] 1.58-1.64), and a fully adjusted HR of 1.26 (95% CI 1.24-1.29). With respect to impact on health system costs, COPD was associated with a partially adjusted relative increase of 13.1% (95% CI 12.7%-13.4%), and an increase of 4.6% (95% CI 4.3%-5.0%) with full adjustment. Frailty, cancer and procedure type (such as orthopedic and lower abdominal surgery) modified the association between COPD and outcomes.

interpretationPatients with COPD have decreased survival and increased costs in the year after surgery. Frailty, cancer and the type of surgical procedure modified associations between COPD and outcomes, and must be considered when risk-stratifying surgical patients with COPD.

Indexed as

Elective Surgical ProceduresHealth Care CostsInpatientsPulmonary Disease, Chronic ObstructiveCohort StudiesFrailtyHumansOntarioRetrospective Studies

Identifiers

PMID36649951
PMCPMC9851642
OpenAlexW4316805122

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

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.