Evidence map›Paper›PMID 34046493›Full record

ArticleERJ open research2021

The Living with Pulmonary Fibrosis questionnaire in progressive fibrosing interstitial lung disease.

Jeffrey Swigris, Katelyn Cutts, Natalia Male, Michael Baldwin, Klaus B Rohr, Donald M Bushnell

Open access · goldAbstract read
In one paragraph

Article in ERJ open research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 3 pooled it
4.0field-weighted citation impact, top 5% 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

31 citing papers in PubMed, 3 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Patient-reported outcome measures for cough used in interstitial lung disease: a systematic review.European respiratory review : an official journal of the European Respiratory Society · 2025
    Pooled it
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  11. Review
  12. Progressive pulmonary fibrosis: the importance of identification and intervention.European respiratory review : an official journal of the European Respiratory Society · 2026
    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

6 authors at 3 institutions in 2 countries.

Jeffrey SwigrisNational Jewish Health, Denver, CO, USA.ORCID https://orcid.org/0000-0002-2643-8110
Katelyn CuttsEvidera, Bethesda, MD, USA.
Natalia MaleBoehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany.
Michael BaldwinBoehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany.
Klaus B RohrBoehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany.
Donald M BushnellEvidera, Bethesda, MD, USA.ORCID https://orcid.org/0000-0001-9226-1678
Boehringer Ingelheim (Germany) · DEIthaka Harbors · USNational Jewish Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Living with Idiopathic Pulmonary Fibrosis (L-IPF) questionnaire was developed with substantial input from patients with idiopathic pulmonary fibrosis (IPF) to assess symptoms and health-related quality of life (HRQoL). Because IPF is the prototypical chronic fibrosing interstitial lung disease (ILD) with a progressive phenotype, we expanded applicability of the L-IPF by deleting the word "idiopathic", creating the L-PF (Living with Pulmonary Fibrosis) questionnaire, and then assessed its relevance among patients with progressive fibrosing ILDs in one-to-one interviews. Patients in the USA and Germany with any progressive fibrosing ILD other than IPF were asked about their disease and symptoms, completed the 44-item L-PF questionnaire (comprising two modules that assess symptoms and impacts of disease) and then answered a series of debriefing questions. Interviews were recorded, transcribed and coded for qualitative content analysis. 20 patients were interviewed, but time constraints meant not all were asked about all items. The most frequent diagnoses were rheumatoid arthritis-associated ILD (25%) and mixed connective tissue disease-associated ILD (20%). Almost all patients endorsed the symptoms assessed by the L-PF: shortness of breath (19 out of 20 patients), cough (19 out of 20) and fatigue (18 out of 20). Most patients endorsed impacts of progressive fibrosing ILD on activities of daily living, physical well-being, sleep, emotional well-being, and social aspects of their lives. Most patients had an overall positive impression of the Symptoms module and understood items as intended. All seven patients asked understood the items of the Impacts module. The L-PF contains concepts relevant and important to patients with progressive fibrosing ILD, and items are understood as intended.

Identifiers

PMID34046493
PMCPMC8141833
OpenAlexW3138274828

What OpenQuestion holds

Textmetadata
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.