Evidence map›Paper›PMID 24708443›Full record

Observational studyRespiratory research2014

Evidence suggesting that oral corticosteroids increase mortality in stable chronic obstructive pulmonary disease.

Nobuyuki Horita, Naoki Miyazawa, Satoshi Morita, Ryota Kojima, Miyo Inoue, Yoshiaki Ishigatsubo, Takeshi Kaneko

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Respiratory research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 13% 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, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Changes in Oral Corticosteroid Utilization in Patients with COPD Following Initiation of FF/UMEC/VI.International journal of chronic obstructive pulmonary disease · 2023
    Article
  7. Review
  8. Article
  9. Review
  10. Observational
  11. Article
  12. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Nobuyuki HoritaDepartment of Internal Medicine and Clinical Immunology, Yokohama City University Graduate School of Medicine, Yokohama, Japan. nobuyuki_horita@yahoo.co.jp.
Naoki Miyazawa
Satoshi Morita
Ryota Kojima
Miyo Inoue
Yoshiaki Ishigatsubo
Takeshi Kaneko
Saiseikai Ibaraki Hospital · JPYokohama City University · JPYokohama City University Medical Center · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOral corticosteroids were used to control stable chronic obstructive pulmonary disease (COPD) decades ago. However, recent guidelines do not recommend long-term oral corticosteroids (LTOC) use for stable COPD patients, partly because it causes side-effects such as respiratory muscle deterioration and immunosuppression. Nonetheless, the impact of LTOC on life prognosis for stable COPD patients has not been clarified.

methodsWe used the data of patients randomized to non-surgery treatment in the National Emphysema Treatment Trial. Severe and very severe stable COPD patients who were eligible for volume reduction surgery were recruited at 17 clinical centers in the United States and randomized during 1998-2002. Patients were followed-up for at least five years. Hazard ratios for death by LTOC were estimated by three models using Cox proportional hazard analysis and propensity score matching.

resultsThe pre-matching cohort comprised 444 patients (prescription of LTOC: 23.0%. Age: 66.6 ± 5.4 year old. Female: 35.6%. Percent predicted forced expiratory volume in one second: 27.0 ± 7.1%. Mortality during follow-up: 67.1%). Hazard ratio using a multiple-variable Cox model in the pre-matching cohort was 1.54 (P = 0.001). Propensity score matching was conducted with 26 parameters (C-statics: 0.73). The propensity-matched cohort comprised of 65 LTOC(+) cases and 195 LTOC(-) cases (prescription of LTOC: 25.0%. Age: 66.5 ± 5.3 year old. Female: 35.4%. Percent predicted forced expiratory volume in one second: 26.1 ± 6.8%. Mortality during follow-up: 71.3%). No parameters differed between cohorts. The hazard ratio using a single-variable Cox model in the propensity-score-matched cohort was 1.50 (P = 0.013). The hazard ratio using a multiple-variable Cox model in the propensity-score-matched cohort was 1.73 (P = 0.001).

conclusionsLTOC may increase the mortality of stable severe and very severe COPD patients.

Indexed as

Adrenal Cortex HormonesEvidence-Based MedicinePulmonary Disease, Chronic ObstructiveAdministration, OralAgedCohort StudiesFemaleFollow-Up StudiesHumansMaleMiddle AgedMortalityMulticenter Studies as TopicRandomized Controlled Trials as TopicAdrenal Cortex Hormones

Identifiers

PMID24708443
PMCPMC3976535
OpenAlexW2145642468

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.