Evidence map›Paper›PMID 29133978›Full record

Observational studyInternational journal of chronic obstructive pulmonary disease2017

A nationwide structure for valid long-term oxygen therapy: 29-year prospective data in Sweden.

Magnus Ekström, Zainab Ahmadi, Hillevi Larsson, Tove Nilsson, Josefin Wahlberg, Kerstin E Ström, Bengt Midgren

Abstract readObservational Study
In one paragraph

Observational study in International journal of chronic obstructive pulmonary disease, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Review
  2. Article
  3. Observational
  4. Article
  5. Review
  6. Smoking and home oxygen therapy: a review and consensus statement from a multidisciplinary Swedish taskforce.European respiratory review : an official journal of the European Respiratory Society · 2024
    Review
  7. Article
  8. Article
  9. Article
  10. Observational
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Patient registries for home oxygen research and evaluation.International journal of chronic obstructive pulmonary disease · 2019
    Article
  20. Daily duration of long-term oxygen therapy and risk of hospitalization in oxygen-dependent COPD patients.International journal of chronic obstructive pulmonary disease · 2018
    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.

Magnus EkströmDepartment of Clinical Sciences, Division of Respiratory Medicine & Allergology, Lund University, Lund.
Zainab AhmadiDepartment of Clinical Sciences, Division of Respiratory Medicine & Allergology, Lund University, Lund.
Hillevi LarssonDepartment of Clinical Sciences, Division of Respiratory Medicine & Allergology, Lund University, Lund.
Tove NilssonDepartment of Medicine, Blekinge Hospital, Karlskrona, Sweden.
Josefin WahlbergDepartment of Medicine, Blekinge Hospital, Karlskrona, Sweden.
Kerstin E StrömDepartment of Clinical Sciences, Division of Respiratory Medicine & Allergology, Lund University, Lund.
Bengt MidgrenDepartment of Clinical Sciences, Division of Respiratory Medicine & Allergology, Lund University, Lund.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLong-term oxygen therapy (LTOT) improves prognosis in COPD with severe hypoxemia. However, adherence to criteria for eligibility and quality of LTOT is often insufficient and varies between countries. The aim of this study was to evaluate a national structure for prescription and management of LTOT over three decades in Sweden.

methodsThe study was a prospective, population-based study of 23,909 patients on LTOT from 1987 to 2015 in the Swedish National Register of Respiratory Failure (Swedevox). We assessed the prevalence, incidence, and structure of LTOT; completeness of registration in Swedevox; and validity of prescription and management of LTOT in Sweden according to seven published quality indicators.

resultsLTOT was prescribed by 48 respiratory or medicine units and managed mainly by specialized oxygen nurses. Swedevox had a stable completeness of 85% of patients starting LTOT since 1987. The national incidence of LTOT increased from 3.9 to 14.7/100,000 inhabitants over the time period. In 2015, 2,596 patients had ongoing therapeutic LTOT in the registry, a national prevalence of 31.6/100,000. Adherence to prescription recommendations and fulfillment of quality criteria was stable or improved over time. Of patients starting LTOT in 2015, 88% had severe hypoxemia (partial pressure of arterial oxygen [PaO

conclusionWe present a structure for prescription, management, and follow-up of LTOT. The national registry effectively monitored adherence to prescription recommendations and most likely contributed to improved quality of care.

Indexed as

Guideline AdherenceHumansHypoxiaIncidenceLongitudinal StudiesLungOxygen Inhalation TherapyPractice Guidelines as TopicPractice Patterns, Physicians'PrevalenceProspective StudiesPulmonary Disease, Chronic ObstructiveQuality ImprovementQuality Indicators, Health CareRegistriesSwedenCOPDhypoxemiaLTOToxygenrespiratory failure

Identifiers

PMID29133978
PMCPMC5669791

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.