Evidence map›Paper›PMID 31928100›Full record

Observational studyActa orthopaedica2020

Cognitive impairment influences the risk of reoperation after hip fracture surgery: results of 87,573 operations reported to the Norwegian Hip Fracture Register.

Målfrid Holen Kristoffersen, Eva Dybvik, Ole Martin Steihaug, Torbjørn Berge Kristensen, Lars Birger Engesaeter, Anette Hylen Ranhoff, Jan-Erik Gjertsen

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Acta orthopaedica, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

12 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
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  8. Matters We Metric Vs. Metrics that Matter.Geriatric orthopaedic surgery & rehabilitation · 2024
    Review
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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

7 authors at 2 institutions in 1 country.

Målfrid Holen KristoffersenNorwegian Hip Fracture Register, Department of Orthopedic Surgery, Haukeland University Hospital, Bergen.
Eva DybvikNorwegian Hip Fracture Register, Department of Orthopedic Surgery, Haukeland University Hospital, Bergen.
Ole Martin SteihaugEmergency Department, Haukeland University Hospital, Bergen.
Torbjørn Berge KristensenNorwegian Hip Fracture Register, Department of Orthopedic Surgery, Haukeland University Hospital, Bergen.
Lars Birger EngesaeterNorwegian Hip Fracture Register, Department of Orthopedic Surgery, Haukeland University Hospital, Bergen.
Anette Hylen RanhoffDiakonhjemmet Hospital, Oslo.
Jan-Erik GjertsenNorwegian Hip Fracture Register, Department of Orthopedic Surgery, Haukeland University Hospital, Bergen.
Haukeland University Hospital · NOUniversity of Bergen · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose - About one-fourth of hip fracture patients have cognitive impairment. We investigated whether patients' cognitive function affects surgical treatment, risk of reoperation, and mortality after hip fracture, based on data in the Norwegian Hip Fracture Register (NHFR).Patients and methods - This prospective cohort study included 87,573 hip fractures reported to the NHFR in 2005-2017. Hazard rate ratios (HRRs) for risk of reoperation and mortality were calculated using Cox regression adjusted for sex, age, ASA class, fracture type, and surgical method.Results - Cognitive impairment was reported in 27% of patients. They were older (86 vs. 82 years) and had higher ASA class than non-impaired patients. There were no differences in fracture type or operation methods. Cognitively impaired patients had a lower overall reoperation rate (4.7% vs. 8.9%, HRR 0.71; 95% CI 0.66-0.76) and lower risk of reoperation after osteosynthesis (HRR 0.58; CI 0.53-0.63) than non-impaired patients. Cognitively impaired hip fracture patients had an increased reoperation risk after hemiarthroplasty (HRR 1.2; CI 1.1-1.4), mainly due to dislocations (1.5% vs. 1.0%, HRR 1.7; CI 1.3-2.1). Risk of dislocation was particularly high following the posterior approach (4.7% vs. 2.8%, HRR 1.8; CI 1.2-2.7). Further, they had a higher risk of reoperation due to periprosthetic fracture after uncemented hemiarthroplasty (HRR 1.6; CI 1.0-2.6). Cognitively impaired hip fracture patients had higher 1-year mortality than those without cognitive impairment (38% vs. 16%, HRR 2.1; CI 2.1-2.2).Interpretation - Our findings support giving cognitively impaired patients the same surgical treatment as non-impaired patients. But since the risk of hemiprosthesis dislocation and periprosthetic fracture was higher in cognitively impaired patients, they should probably not have posterior approach surgery or uncemented implants.

Indexed as

AgedAged, 80 and overCognitive DysfunctionFemaleFracture Fixation, InternalHemiarthroplastyHip FracturesHip ProsthesisHumansMaleNorwayPeriprosthetic FracturesPostoperative ComplicationsProspective StudiesProsthesis-Related InfectionsRegistries

Identifiers

PMID31928100
PMCPMC7144309
OpenAlexW2999874432

What OpenQuestion holds

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LicenceCC BY
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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.