Evidence map›Paper›PMID 30956799›Full record

ArticleBMJ open respiratory research2019

The King's Brief Interstitial Lung Disease (KBILD) questionnaire: an updated minimal clinically important difference.

Aish Sinha, Amit Suresh Patel, Richard J Siegert, Sabrina Bajwah, Toby M Maher, Elizabeth A Renzoni, Athol U Wells, Irene J Higginson, Surinder S Birring

Open access · goldAbstract read
In one paragraph

Article in BMJ open respiratory research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 2 pooled it
6.3field-weighted citation impact, top 3% 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, 2 syntheses or guidelines pooled it, 67 citations in OpenAlex.

  1. Pooled it
  2. 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 · 2020
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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

9 authors at 4 institutions in 4 countries.

Aish SinhaCentre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.ORCID 0000-0001-5407-4943
Amit Suresh PatelDepartment of Respiratory Medicine, King's College Hospital, London, UK.
Richard J SiegertHealth and Rehabilitation Research Institute, AUT University, Auckland, New Zealand.
Sabrina BajwahCicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King's College London, London, UK.
Toby M MaherInterstitial Lung Disease Unit, Royal Brompton Hospital, London, UK.ORCID 0000-0001-7192-9149
Elizabeth A RenzoniInterstitial Lung Disease Unit, Royal Brompton Hospital, London, UK.
Athol U WellsInterstitial Lung Disease Unit, Royal Brompton Hospital, London, UK.
Irene J HigginsonCicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King's College London, London, UK.
Surinder S BirringCentre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.
King's College London · GBRoyal Brompton Hospital · GBAuckland University of Technology · NZKing's College Hospital · GB

Funding

Department of Health PB-PG-0712-28073Department of Health PB-PG-0808-17311Versus Arthritis 20719
6 · The paper itself

Abstract

Introduction: The King's Brief Interstitial Lung Disease (KBILD) is a 15-item validated health-related quality of life (HRQOL) questionnaire. The method of scoring the KBILD has recently changed to incorporate a logit-scale transformation from one that used raw item responses, as this is potentially a more linear scale. The aim of this study was to re-evaluate the KBILD minimal clinically important difference (MCID) using the new logit -transformed scoring. Methods: 57 patients with interstitial lung disease (17 idiopathic pulmonary fibrosis, IPF) were asked to complete the KBILD questionnaire on two occasions in outpatient clinics. At the second visit, patients also completed a 15-item global rating of change of health status questionnaire (GRCQ). The MCID was calculated as the mean of four different methods: the change in KBILD for patients indicating a small change in GRCQ, patients with a 7%-12% change in FVC, 1 SE of measurement of baseline KBILD and effect size (ES) of 0.3. Results: The mean (SD) KBILD total score for all patients was 55.3 (15.6). 16 patients underwent a therapeutic intervention. 36 patients reported a change in their condition on the GRCQ; 22 deteriorated, 14 improved and 21 were unchanged. There was a significant change in KBILD total score in patients reporting a change in GRCQ; mean (SD) 57.0 (13.6) versus 50.0 (9.7); mean difference 7.0; 95% CI of difference 3.0 to 11.0; p<0.01. The change in KBILD total score correlated with the GRCQ scale; r=-0.49, p<0.01. The mean KBILD total score MCID was 5. The MCID of KBILD domains were 6 for Psychological, 7 for Breathlessness and Activities, and 11 for Chest Symptoms. Conclusion: The KBILD is a responsive tool for longitudinal assessment of HRQOL in patients with ILD. The MCID of the KBILD total score is a 5-unit change.

Indexed as

Minimal Clinically Important DifferenceQuality of LifeAgedFemaleHumansLung Diseases, InterstitialMaleMiddle AgedSurveys and Questionnairesglobal rating of change questionnairehealth related quality of lifeinterstitial lung diseaseking’s brief Interstitial lung disease questionnaireminimal clinically important difference

Identifiers

PMID30956799
PMCPMC6424243
OpenAlexW2917151633

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.