ArticleRespiratory research2019
Validation of the IPF-specific version of St. George's Respiratory Questionnaire.
Article in Respiratory research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02818712 (Health-related Quality of Life and Comorbidities in Danish Patients With Idiopathic Pulmonary Fibrosis - a Nationwide Follow-up), which is not on this map. Cited by 35 papers, 4 of them syntheses that pooled it.
What it found
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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.
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.
Health-related Quality of Life and Comorbidities in Danish Patients With Idiopathic Pulmonary Fibrosis - a Nationwide Follow-up
Who cites it
35 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Quality of life instruments in idiopathic pulmonary fibrosis: a COSMIN-based systematic review.BMC pulmonary medicine · 2026Pooled it
- Psychometric properties of health-related quality of life assessment instruments in idiopathic pulmonary fibrosis: a systematic review applying COSMIN methodology.Health and quality of life outcomes · 2026Pooled it
- Health-related quality of life and health state utility value in idiopathic pulmonary fibrosis: a systematic review and meta-analysis.Health and quality of life outcomes · 2025Pooled it
- Health-related quality of life of patients with idiopathic pulmonary fibrosis: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2020Pooled it
- Tele-Rehabilitation Program in Idiopathic Pulmonary Fibrosis-A Single-Center Randomized Trial.International journal of environmental research and public health · 2021Trial
- Pulmonary Daoyin as a traditional Chinese medicine rehabilitation programme for patients with IPF: A randomized controlled trial.Respirology (Carlton, Vic.) · 2021Trial
- Responsiveness and minimal clinically important difference of SGRQ-I and K-BILD in idiopathic pulmonary fibrosis.Respiratory research · 2020Trial
- Clinical Assessment and Outcomes Across Respiratory Diseases.Thoracic research and practice · 2026Article
- Translation, Cultural Adaptation, and Validation of the Turkish Version of the St George's Respiratory Questionnaire for Idiopathic Pulmonary Fibrosis (SGRQ-I).Thoracic research and practice · 2026Article
- Article
- Impact of Pirfenidone on Patient-Reported Outcomes in Patients With Idiopathic Pulmonary Fibrosis From the Pulmonary Fibrosis Foundation Patient Registry.CHEST pulmonary · 2024Article
- Assessment of quality of life in IPF Patients: a multicenter observational study.Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG · 2024Article
- Divergent perspectives: exploring the relationships between St. George's Respiratory Questionnaire and outcome measures in systemic sclerosis-associated interstitial lung disease.Clinical rheumatology · 2024Article
- Validation of a Novel Clinical Dyspnea Scale - A Retrospective Pilot Study.The American journal of hospice & palliative care · 2024Article
- Muco-Obstructive Lung Disease: A Systematic Review.Cureus · 2023Review
- Clinical Impact of Physical Activity and Cough on Disease Progression in Fibrotic Interstitial Lung Disease.Journal of clinical medicine · 2023Article
- Diagnostic delay in IPF impacts progression-free survival, quality of life and hospitalisation rates.BMJ open respiratory research · 2022Observational
- Physical and Psychosocial Concept Domains Related to Health-Related Quality of Life (HRQL) in 50 Girls and 52 Boys Between 5 and 18 Years Old in Poland Using the Parent-Reported 50-Item Child Health Questionnaire (CHQ-PF50).Medical science monitor : international medical journal of experimental and clinical research · 2022Article
- Article
- Effect of a Telerehabilitation program in sarcoidosis.Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG · 2022Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
backgroundPatients with idiopathic pulmonary fibrosis (IPF) have impaired health-related quality of life (HRQL). To measure HRQL, an IPF-specific version of the St. George's Respiratory Questionnaire (SGRQ-I) was developed, but not sufficiently validated. This study aimed to assess the validity (i.a. known-groups validity and concurrent validity) and test-retest reliability of SGRQ-I in IPF patients with different disease durations.
methodsPatients with IPF were consecutively recruited and completed SGRQ, SGRQ-I, King's Brief Interstitial Lung Disease questionnaire (K-BILD), University of California, San Diego Shortness of Breath Questionnaire (SOBQ) and Short Form-36 (SF-36) along with pulmonary function tests and a 6-min walk test (6MWT) at baseline. After two weeks, SGRQ-I and Global Rating of Change Scales (GRCS) were completed.
resultsAt baseline and after two weeks, 150 and 134 patients completed the questionnaires, respectively. The internal consistency of SGRQ-I was high (Cronbach's α = 0.92). Good concurrent validity was demonstrated by high intraclass correlation coefficients (ICC = 0.97), Bland-Altman plots and moderate to strong correlations to K-BILD, SOBQ and SF-36 (r = - 0.46 to 0.80). High ICC (0.92) and a Bland-Altman plot indicated good test-retest reliability. SGRQ-I was good at discriminating between patients with different stages of disease (Δscore > 18.1, effect sizes > 0.10). Validity was similar across groups of different disease duration.
conclusionsSGRQ-I proved to be valid at distinguishing between different disease severities, valid compared to other HRQL instruments, applicable across different disease durations and reliable upon repetition. SGRQ-I is a valid option for measuring HRQL in patients with IPF.
trial registrationThe study was registered at clinicaltrials.org ( NCT02818712 ) on 15 June 2016.
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