Evidence map›Paper›PMID 30356058›Full record

ArticleScientific reports2018

Determinants of mortality after hip fracture surgery in Sweden: a registry-based retrospective cohort study.

Rasmus Åhman, Pontus Forsberg Siverhall, Johan Snygg, Mats Fredrikson, Gunnar Enlund, Karin Björnström, Michelle S Chew

Abstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Ready for discharge? Factors associated with prolonged length of stay following geriatric hip fracture.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  6. Comparing mortality in the elderly after proximal femur fractures and coxarthrosis: the effect of individual health characteristics and day of surgery.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Orthogeriatric care-outcome of different fragility fractures.Archives of orthopaedic and trauma surgery · 2023
    Article
  12. Article
  13. Article
  14. Observational
  15. Article
  16. Article
  17. Article
  18. Relatively low and moderate pre-fracture serum 25-hydroxyvitamin D levels associated with the highest survival in elderly hip fracture patients in Finland: a minimum 3-year follow-up.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2022
    Article
  19. Article
  20. 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

7 authors.

Rasmus ÅhmanDepartment of Anaesthesia and Intensive Care, Department of Medical and Health Sciences, Linköping University, Linköping, S-58185, Sweden. rasah694@student.liu.se.
Pontus Forsberg SiverhallDepartment of Anaesthesia and Intensive Care, Department of Medical and Health Sciences, Linköping University, Linköping, S-58185, Sweden.
Johan SnyggDepartment of Anaesthesia and Intensive Care, Sahlgrenska University Hospital, 41345, Gothenburg, Sweden.
Mats FredriksonDepartment of Clinical and Experimental Medicine, Faculty of Medicine and Health, Linköping University, S-58185, Linköping, Sweden.
Gunnar EnlundDepartment of Anaesthesia and Intensive Care, Uppsala University Hospital, 78185, Uppsala, Sweden.
Karin BjörnströmDepartment of Anaesthesia and Intensive Care, Department of Medical and Health Sciences, Linköping University, Linköping, S-58185, Sweden.
Michelle S ChewDepartment of Anaesthesia and Intensive Care, Department of Medical and Health Sciences, Linköping University, Linköping, S-58185, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Surgery for hip fractures is associated with high mortality and morbidity. The causes of poor outcome are not fully understood and may be related to other factors than the surgery itself. The relative contributions of patient, surgical, anaesthetic and structural factors have seldom been studied together. This study, a retrospective registry-based cohort study of 14 932 patients undergoing hip fracture surgery in Sweden from 1st of January 2014 to 31st of December 2016, aimed to identify important predictors of mortality post-surgery. The independent predictive power of our included variables was examined using Cox proportional hazards modeling with all-cause mortality at longest follow-up as the outcome. Twelve independent variables were considered as interrelated 'exposures' and their individual adjusted effect within a single model were evaluated. Kaplan-Meier curves were also generated. Crude mortality rates were 8.2% at 30 days (95% CI 7.7-8.6%) and 23.6% at 365 days (95% CI 22.9-24.2%). Of the 12 factors entered into the Cox regression analysis, age (aHR1.06, p < 0.001), male gender (aHR 1.45, p < 0.001), ASA-PS-class (ASA 1&2 reference; ASA 3 aHR 2.12; ASA 4 aHR 4.79; ASA 5 aHR 12.57 respectively, p < 0.001) and PACU-LOS (aHR 1.01, p < 0.001) were significantly associated with mortality at longest follow-up (up to 3 years). University hospital status was protective (aHR 0.83, p < 0.001) in the same model. Age, gender and ASA-PS-class were strong predictors of mortality after surgery for hip fractures in Sweden. University hospital status and length of stay in the postoperative care unit were also identified as modifiable risk factors after multivariable adjustment and require confirmation in future studies.

Indexed as

RegistriesAdolescentAdultAgedAged, 80 and overAge FactorsFemaleFollow-Up StudiesHealth StatusHip FracturesHospitals, UniversityHumansIntensive Care UnitsKaplan-Meier EstimateLength of StayLogistic Models

Identifiers

PMID30356058
PMCPMC6200788

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.