Evidence map›Paper›PMID 28512116›Full record

Observational studyJournal of the American Heart Association2017

Weekday and Survival After Cardiac Surgery-A Swedish Nationwide Cohort Study in 106 473 Patients.

Magnus Dalén, Gustaf Edgren, Torbjörn Ivert, Martin J Holzmann, Ulrik Sartipy

Registry-linked trialAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Journal of the American Heart Association, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02276950 (HeAlth-data Register sTudies of Risk and Outcomes in Cardiac Surgery), which is not on this map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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.

NCT02276950 active not recruitingnot on this map

HeAlth-data Register sTudies of Risk and Outcomes in Cardiac Surgery (HARTROCS)

TypeobservationalSponsorUlrik Sartipy, MD, PhDRan2011 to 2027Enrolled150,000ConditionsCardiovascular Diseases, Kidney Diseases, Depression, Diabetes MellitusArmsCoronary artery bypass surgery, Heart valve surgery
3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Weekday and outcomes of elective cardiac surgery in the UK: a large retrospective database analysis.European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery · 2022
    Article
  4. Article
  5. Outcomes of non-elective coronary artery bypass grafting performed on weekends.European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery · 2020
    Article
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

5 authors.

Magnus DalénSection of Cardiothoracic Surgery, Karolinska University Hospital, Stockholm, Sweden.
Gustaf EdgrenHematology Centre, Karolinska University Hospital, Stockholm, Sweden.
Torbjörn IvertDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Martin J HolzmannDepartment of Emergency Medicine, Karolinska University Hospital, Stockholm, Sweden.
Ulrik SartipySection of Cardiothoracic Surgery, Karolinska University Hospital, Stockholm, Sweden Ulrik.Sartipy@karolinska.se.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of this study was to investigate the association between weekday of surgery and survival following cardiac surgery. METHODS AND

resultsIn a nationwide cohort study, we included all patients who underwent cardiac surgery in 1999-2013 from the SWEDEHEART (Swedish Web-system for Enhancement and Development of Evidence-based care in Heart disease Evaluated According to Recommended Therapies) register. All-cause mortality until March 2014 was obtained from national registers. The association between weekday of surgery and mortality was estimated using Cox regression, and reported as hazard ratios with 95% CI. We used the restricted mean survival time difference to estimate loss of life related to weekday of surgery. Among 106 473 patients, 25 221 (24%), 24 471 (23%), 22 977 (22%), 20 189 (19%), 9251 (8.7%), and 4364 (4.1%) underwent surgery during a Monday, Tuesday, Wednesday, Thursday, Friday, and a Saturday/Sunday, respectively. More patients were operated on urgently during Friday to Sunday, and unadjusted analyses showed higher early and late mortality in those patients. The adjusted hazard ratios (95% CI) were 1.00 (0.89-1.13), 1.00 (0.88-1.12), 1.02 (0.90-1.16), 1.17 (1.01-1.37), and 1.05 (0.86-1.29) in patients who underwent surgery during a Tuesday, Wednesday, Thursday, Friday, and Saturday/Sunday compared to a Monday, after 1 year of follow-up conditional on 30-day survival. In elective surgery (n=46 146), the 1-year restricted mean survival time difference (95% CI) was -0.5 (-1.8-0.8), -0.5 (-1.9-0.8), -1.0 (-2.6-0.5), 0.02 (-2.2-2.3), and -1.2 (-6.3-3.9) days in patients who underwent surgery during a Tuesday, Wednesday, Thursday, Friday, and a Saturday/Sunday, respectively, compared to a Monday.

conclusionsWe found no evidence of a clinically relevant weekday effect in patents who underwent cardiac surgery in Sweden during a 15-year period. These data suggest that the early risk and long-term prognosis following cardiac surgery was not affected by the weekday of surgery. CLINICAL

trial registrationURL: http://www.clinicaltrials.gov. Unique identifier: NCT02276950.

Indexed as

After-Hours CareAppointments and SchedulesProcess Assessment, Health CareAgedCardiac Surgical ProceduresFemaleHumansKaplan-Meier EstimateMaleMiddle AgedProportional Hazards ModelsQuality Indicators, Health CareRegistriesRisk FactorsSwedenTime Factorscardiac surgerylong‐term outcomequality of carerisk factorsweekday effect

Identifiers

PMID28512116
PMCPMC5524116

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Registered trials

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.